初二数学实数计算题30道 初二数学实数解答题30道
\u6c42\u521d\u4e8c\u6570\u5b6660\u9053\u8ba1\u7b97\u9898\u300130\u9053\u5b9e\u6570\u8fd0\u7b97\u9898\u300130\u9053\u89e3\u65b9\u7a0b\u7ec4\uff08\u5e26\u89e3)(1)99²\uff0d2.99²
(2)80\u00d73.5²\uff0b160\u00d73.5\u00d71.5\uff0b80\u00d71.5²
(3)181²\uff0d61²\u00f7301²\uff0d181²
(4)5x\uff0d5y\uff0b5z
(5)-5a²+25a-5a
(6)2a(b+c)-3(b+c)
(7)(ab+a)+(b+1)
(8)-4m³+16m³-28m
(9)16x-25x³y²
(10)36m²a-9m²a²-36m²
\u221a32-3\u221a1/2+\u221a2
\u221a12+\u221a27/\u221a3-\u221a1/3\u00d7\u221a12
\u221a50+\u221a30/\u221a8-4
\uff08\u221a6-2\u221a15\uff09\u00d7\u221a3-6\u221a1/2
\u221a2/3-4\u221a216+43\u221a1/6
\u221a8+\u221a30-\u221a2
\u221a40-5\u221a1/10+\u221a10
\u221a2+\u221a8/\u221a2
\u221a2/9+\u221a50+\u221a32
\uff081-\u221a3\uff09\uff08\u221a3+2\uff09
\uff08\u221a8+3\u221a6\uff09\u00f7\u221a2-\u221a3\u00d7\u221a0.7
\uff08-3+\u221a6\uff09\uff08-3-\u221a6\uff09-\uff08\u221a3-1/\u221a3\uff09²
³\u221a0.125-\u221a3
1/16+³\u221a\uff081-7/8\uff09²
\u221a2/3-\u221a216+42\u221a1/6
\u89e3\u65b9\u7a0b\u221a3
X-1=\u221a2
X
\u6c42X
{\u221a5
X-3\u221a
Y=1}
{\u221a3
X-\u221a5
Y=2}
\u6ce8\uff1aX\u5168\u90e8\u4e0d\u5728\u6839\u53f7\u5185
\u221a\uff081/2x\uff09^2\uff0b10/9x^2
=\u221a[1/(4x^2)+10/(9x^2)]
=\u221a49/36x^2
\u82e5x>0,=7/(6x)
\u82e5x<0,=-7/(6x)
\u221aa^4mb^2n\uff0b1
=\u221a(a^2mb^n)^2\uff0b1
=a^2mb^n\uff0b1
\u221a\uff084a^5\uff0b8a^4\uff09\uff08a^2\uff0b3a\uff0b2\uff09
=\u221a[4a^4(a+2)][(a+2)(a+1)]
=\u221a[4a^4(a+2)^2(a+1)]
=2a^2(a+2)\u221a(a+1)
.
3\u221a\uff081/6\uff09-4\u221a\uff0850\uff09+30\u221a\uff082/3\uff09
\u7b54\u68483\u221a\uff081/6\uff09-4\u221a\uff0850\uff09+30\u221a\uff082/3\uff09
=
3\u00d7\u221a6/6-4\u00d75\u221a2+30\u00d7\u221a6/3
\uff1d\u221a6/2-20\u221a2+10\u221a6
2.
\uff081-\u6839\u53f72\uff09/2\u4e58\u4ee5\uff081\uff0b\u6839\u53f72\uff09\uff0f2
\u9898\u662f\u8fd9\u6837\u7684\u4e8c\u5206\u4e4b\u4e00\u51cf\u6839\u53f72\u4e58\u4ee5\u4e8c\u5206\u4e4b\u4e00\u52a0\u6839\u53f72
\u7b54\u6848\uff1a\uff081-\u6839\u53f72\uff09/2\u4e58\u4ee5\uff081\uff0b\u6839\u53f72\uff09\uff0f2
=\uff081-\u221a2\uff09*\uff081-\u221a2\uff09\uff0f4
\uff1d\uff081\uff0d2\uff09\uff0f4
\uff1d\uff0d1\uff0f4
1.3\u221a\uff081/6\uff09-4\u221a\uff0850\uff09+30\u221a\uff082/3\uff09
\u7b54\u68483\u221a\uff081/6\uff09-4\u221a\uff0850\uff09+30\u221a\uff082/3\uff09
=
3\u00d7\u221a6/6-4\u00d75\u221a2+30\u00d7\u221a6/3
\uff1d\u221a6/2-20\u221a2+10\u221a6
2.
\uff081-\u6839\u53f72\uff09/2\u4e58\u4ee5\uff081\uff0b\u6839\u53f72\uff09\uff0f2
\u9898\u662f\u8fd9\u6837\u7684\u4e8c\u5206\u4e4b\u4e00\u51cf\u6839\u53f72\u4e58\u4ee5\u4e8c\u5206\u4e4b\u4e00\u52a0\u6839\u53f72
\u7b54\u6848\uff1a\uff081-\u6839\u53f72\uff09/2\u4e58\u4ee5\uff081\uff0b\u6839\u53f72\uff09\uff0f2
=\uff081-\u221a2\uff09*\uff081-\u221a2\uff09\uff0f4
\uff1d\uff081\uff0d2\uff09\uff0f4
\uff1d\uff0d1\uff0f4
3.\u221a\uff081/2x\uff09^2\uff0b10/9x^2
\u221a[\uff081/2x\uff09^2\uff0b10/9x^2]
=\u221a(x^2/4+10x^2/9)
=\u221a(9x^2/36+40x^2/36)
=\u221a(49x^2/36)
=7x/6;
4.\u221aa^4mb^2n\uff0b1\uff08a\u3001b\u4e3a\u6b63\u6570\uff09
[\u221a(a^4mb^2n)]\uff0b1\uff08a\u3001b\u4e3a\u6b63\u6570\uff09
=a^2mb^n+1;
5.\u221a\uff084a^5\uff0b8a^4\uff09\uff08a^2\uff0b3a\uff0b2\uff09\uff08a>=0\uff09
\u221a[\uff084a^5\uff0b8a^4\uff09\uff08a^2\uff0b3a\uff0b2\uff09]\uff08a>=0\uff09
=\u221a[4a^4(a+2)(a+2)(a+1)]
=\u221a[(2a^2)^2(a+2)^2(a+1)]
=2a^2(a+2)\u221a(a+1).
\u592a\u591a\u4e86\u5440\uff0c\u53ea\u80fd\u8fd9\u6837\u4e86\uff0c\u6211\u8fd8\u6709\u4e8b
\u60a8\u597d\uff01
\u24605\u221a8-2\u221a32+\u221a50
=5*3\u221a2-2*4\u221a2+5\u221a2
=\u221a2(15-8+5)
=12\u221a2
\u2461\u221a6-\u221a3/2-\u221a2/3
=\u221a6-\u221a6/2-\u221a6/3
=\u221a6/6
\u2462(\u221a45+\u221a27)-(\u221a4/3+\u221a125)
=(3\u221a5+3\u221a3)-(2\u221a3/3+5\u221a5)
=-2\u221a5+7\u221a5/3
\u2463(\u221a4a-\u221a50b)-2(\u221ab/2+\u221a9a)
=(2\u221aa-5\u221a2b)-2(\u221a2b/2+3\u221aa)
=-4\u221aa-6\u221a2b
\u2464\u221a4x*(\u221a3x/2-\u221ax/6)
=2\u221ax(\u221a6x/2-\u221a6x/6)
=2\u221ax*(\u221a6x/3)
=2/3*x*\u221a6
\u2465(x\u221ay-y\u221ax)\u00f7\u221axy
=x\u221ay\u00f7\u221axy-y\u221ax\u00f7\u221axy
=\u221ax-\u221ay
\u2466(3\u221a7+2\u221a3)(2\u221a3-3\u221a7)
=(2\u221a3)^2-(3\u221a7)^2
=12-63
=-51
\u2467(\u221a32-3\u221a3)(4\u221a2+\u221a27)
=(4\u221a2-3\u221a3)(4\u221a2+3\u221a3)
=(4\u221a2)^2-(3\u221a3)^2
=32-27
=5
\u2468(3\u221a6-\u221a4)²
=(3\u221a6)^2-2*3\u221a6*\u221a4+(\u221a4)^2
=54-12\u221a6+4
=58-12\u221a6
\u2469\uff081+\u221a2-\u221a3\uff09\uff081-\u221a2+\u221a3\uff09
=[1+(\u221a2-\u221a3)][1-(\u221a2-\u221a3)]
=1-(\u221a2-\u221a3)^2
=1-(2+3+2\u221a6)
=-4-2\u221a6
1.
=5\u221a5
-
1/25\u221a5
-
4/5\u221a5
=\u221a5*(5-1/25-4/5)
=24/5\u221a5
2.=\u221a144+576
=\u221a720
=12\u221a5
3.)\u221a(8/13)^2-(2/13)^2
=
\u221a(8/13+2/13)(8/13-2/13)
=(2/13)\u221a15
\u586b\u7a7a\u9898\uff1a
1\uff0e\uff0d5\u7684\u7edd\u5bf9\u503c\u662f________\uff0c\uff0d\u7684\u76f8\u53cd\u6570\u662f________\uff0c\u7684\u5012\u6570\u662f________\uff0e
2\uff0e\u7528\u201c\uff1e\u201d\u53f7\u6309\u7531\u5927\u5230\u5c0f\u7684\u987a\u5e8f\u8fde\u63a5\u4e0b\u5217\u5404\u6570\uff1a\uff0d5\uff0c\uff0b2\uff0c\uff0d3.6\uff0c\uff0d6\uff0c\uff0b1\uff0c0\uff0c ______________________________\uff0e
3\uff0e\u7528\u201c\uff1c\u201d\u53f7\u8fde\u63a5\u548c________\uff0e
4\uff0e\u7528\u201c\uff1e\u201d\u53f7\u8fde\u63a5\uff0d0.75\u548c________\uff0e
5\uff0e\u6700\u5c0f\u7684\u6b63\u6574\u6570\u662f________\uff0c\u6700\u5927\u7684\u6b63\u6574\u6570\u662f________\uff0e
6\uff0e\u6700\u5927\u7684\u8d1f\u6574\u6570\u662f________\uff0c\u6700\u5c0f\u8d1f\u6574\u6570\u662f________\uff0e
7\uff0e\u7684\u76f8\u53cd\u6570\u662f________\uff0c\u7684\u5012\u6570\u662f________\uff0c\u7684\u7edd\u5bf9\u503c\u662f________\uff0e
8\uff0e\u5728\u6570\uff0c\uff0d3.14\uff0c\uff0c0.101001000100001\u2026\u2026\uff08\u4e24\u4e2a1\u4e4b\u95f4\u4f9d\u6b21\u591a\u4e00\u4e2a\u96f6\uff09\uff0c\u4e2d\u662f\u65e0\u7406\u6570\u7684\u6709________\uff0e
9\uff0e\u4e00\u4e2a\u6570\u7684\u5012\u6570\u7684\u76f8\u53cd\u6570\u662f\uff0c\u5219\u8fd9\u4e2a\u6570\u662f________\uff0e
10\uff0e\u82e5a\uff0bb\uff1d0\uff0c\u5219\u8fd9\u4e24\u4e2a\u6570\u7684\u5173\u7cfb\u662f________\uff1b
\u82e5a\uff0db\uff1d0\uff0c\u5219\u8fd9\u4e24\u4e2a\u6570\u7684\u5173\u7cfb\u662f________\uff1b
\u82e5ab\uff1d1\uff0c\u5219\u8fd9\u4e24\u4e2a\u6570\u7684\u5173\u7cfb\u662f________\uff0e
11\uff0e\u5982\u679c\uff0c\u90a3\u4e48a\uff1d________\uff0e
12\uff0e\u82e5a\uff1c0\uff0c\u5219\u7684\u7ed3\u679c\u662f________\uff0e
13\uff0e\u6570\u8f74\u4e0a\u7684\u70b9A\u8868\u793a\uff0c\u90a3\u4e48\u4e0eA\u76f8\u8ddd3\u4e2a\u957f\u5ea6\u5355\u4f4d\u7684\u70b9\u6240\u8868\u793a\u7684\u6570\u662f________\uff0e
14\uff0e\u5982\u679c\uff0c\u5219a\uff1d________\uff0cb\uff1d________\uff0e
15\uff0e\u5f53x\uff1c0\u65f6\uff0c________\uff0e
\u4e8c\u3001\u5224\u65ad\u6b63\u8bef\uff1a
1\uff0e\u6709\u7406\u6570\u662f\u6574\u6570\u4e0e\u5c0f\u6570\u7684\u7edf\u79f0\uff0e\uff08 \uff09
2\uff0e\u6ca1\u6709\u6700\u5c0f\u7684\u5b9e\u6570\uff0e\uff08 \uff09
3\uff0ea\uff0bb\u662f\u6709\u7406\u6570\uff0c\u90a3\u4e48a\u3001b\u90fd\u662f\u6709\u7406\u6570\uff0e\uff08 \uff09
4\uff0e\u5b9e\u6570\u7684\u5e73\u65b9\u90fd\u662f\u6b63\u6570\uff0e\uff08 \uff09
5\uff0e\u5b9e\u6570\u7684\u5076\u6b21\u5e42\uff0c\u7edd\u5bf9\u503c\u53ca\u975e\u8d1f\u5b9e\u6570\u7684\u7b97\u672f\u6839\u90fd\u662f\u975e\u8d1f\u6570\uff0e\uff08 \uff09
6\uff0en\u8868\u793a\u6b63\u6574\u6570\uff0c\u52192n\u662f\u5076\u6570\uff0c2n\uff0b1\u662f\u5947\u6570\uff0e\uff08 \uff09
7\uff0e\u662f\u5206\u6570\uff0e\uff08 \uff09
8\uff0ea\uff0b1\uff1ea \uff08 \uff09 2a\uff1ea \uff08 \uff09
9\uff0e\u5982\u679c\uff0c\u5219x\uff1dy\uff0e\uff08 \uff09
10\uff0e\u5982\u679c\uff0c\uff0e\uff08 \uff09
11\uff0e\u5982\u679c\uff0c\u5219\uff0e\uff08 \uff09
12\uff0ea\uff1e\uff0da\u5bf9\u4efb\u610f\u5b9e\u6570\u90fd\u6210\u7acb\uff0e\uff08 \uff09
13\uff0e\u5982\u679c\uff1e\uff0c\u5219\uff1e\uff0e\uff08 \uff09
14\uff0e\u5982\u679c\uff0c\u90a3\u4e48m\uff1d\uff0d10\uff0e\uff08 \uff09
\u4e09\u3001\u9009\u62e9\u586b\u7a7a\uff1a
1\uff0e\u5982\u679cx\u5728\u6570\u8f74\u4e0a\u5982\u56fe\u6240\u793a\uff0c\u4e0b\u5217\u5404\u5f0f\u4e2d\u6b63\u786e\u7684\u662f\uff08 \uff09\uff0e
A\uff0e B\uff0e
C\uff0e D\uff0e\u4ee5\u4e0a\u5168\u9519
2\uff0e\u5df2\u77e5\uff0c\u90a3\u4e48x\u7684\u53d6\u503c\u662f\uff08 \uff09\uff0e
A\uff0ex\uff1c0 B\uff0ex\uff1d0 C\uff0ex\u22640 D\uff0ex\uff1e0
3\uff0e\u4e0b\u5217\u8bf4\u6cd5\u6b63\u786e\u7684\u662f\uff08 \uff09\uff0e
A\uff0e\u82e5a\uff1e0\uff0c\u5219\uff1e B\uff0ea\uff1e\uff0c\u90a3\u4e48a\uff1c1
C\uff0e\u5982\u679c0\uff1ca\uff1c1\uff0c\u90a3\u4e48a\uff1e D\uff0e\u5982\u679c\uff0c\u90a3\u4e48a\uff1e0
4\uff0e\u4e00\u4e2a\u6570\u7b49\u4e8e\u5b83\u7684\u5012\u6570\u76849\u500d\uff0c\u5219\u8fd9\u4e2a\u6570\u662f\uff08 \uff09\uff0e
A\uff0e3 B\uff0e C\uff0e D\uff0e
5\uff0e\u82e5\u6210\u7acb\uff0c\u90a3\u4e48\uff08 \uff09
A\uff0ea\uff0cb\u540c\u53f7 B\uff0ea\uff0cb\u5f02\u53f7
C\uff0ea\uff0cb\u4e3a\u4e00\u5207\u6709\u7406\u6570 D\uff0ea\uff0cb\u540c\u53f7\u6216ab\uff1d0
6\uff0e\u5728\u5b9e\u6570\uff0c0\uff0c\uff0c\uff0d3.14\uff0c\uff0c\u65e0\u7406\u6570\u6709\uff08 \uff09\uff0e
A\uff0e1\u4e2a B\uff0e2\u4e2a C\uff0e3\u4e2a D\uff0e4\u4e2a
7\uff0e\u5728\u4e0b\u5217\u5404\u7c7b\u6570\u4e2d\uff0c\u5b58\u5728\u6700\u5c0f\u7684\u6570\u7684\u662f\uff08 \uff09\uff0e
A\uff0e\u5b9e\u6570 B\uff0e\u81ea\u7136\u6570 C\uff0e\u6574\u6570 D\uff0e\u6709\u7406\u6570
8\uff0e\u82e5m\u8868\u793a\u4e00\u4e2a\u5b9e\u6570\uff0c\u5219\uff0dm\u8868\u793a\u4e00\u4e2a\uff08 \uff09\uff0e
A\uff0e\u8d1f\u6570 B\uff0e\u6b63\u6570 C\uff0e\u5b9e\u6570 D\uff0e\u975e\u6b63\u6570
\u56db\u3001\u8ba1\u7b97\uff1a
1\uff0e\uff1b 2\uff0e\uff1b 3\uff0e\uff1b
4\uff0e\uff08\uff0d1\uff09\u00b7\uff080.3\uff09\u00b7\uff08\uff0d3\uff09\uff1b 5\uff0e\uff1b
6\uff0e\uff1b 7\uff0e0\uff0d
8\uff0e\u7528\u7b80\u4fbf\u65b9\u6cd5\u8ba1\u7b97\uff1b
9\uff0e\uff1b 10\uff0e\uff1b
11\uff0e\uff1b 12\uff0e\uff1b
13\uff0e\uff1b
14\uff0e\uff1b
15\uff0e\uff1b
16\uff0e\uff1b
17\uff0e\uff1b
18\uff0e\uff08n\u662f\u6574\u6570\uff09\uff1b
19\uff0e\uff1b
20\uff0e\uff0e
\u53c2\u8003\u7b54\u6848
\u4e00\u30011\uff0e5\uff0c\uff0c 2\uff0e2\uff1e1\uff1e\uff1e0\uff1e\uff0d3.6\uff1e\uff0d5\uff1e\uff0d6.3 3\uff0e\uff1c
4\uff0e\uff1e\uff0d0.75 5\uff0e1\uff0c\u4e0d\u5b58\u5728 6\uff0e\uff0d1\uff0c\u4e0d\u5b58\u5728 7\uff0e\uff0c\uff0c
8\uff0e\uff0c0.101001000100001 9\uff0e 10\uff0e\u4e92\u4e3a\u76f8\u53cd\u6570\uff0c\u76f8\u7b49\uff0c\u4e92\u4e3a\u5012\u6570
11\uff0e\u20154\uff0c\u20152 12\uff0e\u20152a 13\uff0e\uff0c 14\uff0ea\uff1d2\uff0cb\uff1d8 15\uff0e2
\u4e8c\u30011\uff0e\u00d7 2\uff0e\u221a 3\uff0e\u00d7 4\uff0e\u00d7 5\uff0e\u221a 6\uff0e\u221a 7\uff0e\u00d7 8\uff0e\u221a\u00d7 9\uff0e\u00d7 10\uff0e\u00d7 11\uff0e\u221a
12\uff0e\u00d7 13\uff0e\u00d7 14\uff0e\u00d7
\u4e09\u30011\uff0eC 2\uff0eC 3\uff0eC 4\uff0eC 5\uff0eD 6\uff0eA 7\uff0eB 8\uff0eC
\u56db\u30011\uff0e0 2\uff0e27 3\uff0e 4\uff0e0.9 5\uff0e\uff0d1 6\uff0e1.05 7\uff0e\uff0d9 8\uff0e0 9\uff0e 10\uff0e0
11\uff0e\uff0d1 12\uff0e\uff0d22 13\uff0e192 14\uff0e\uff0d12 15\uff0e 16\uff0e 17\uff0e\uff0d489
18\uff0e4 19\uff0e6 20\uff0e
2 √12+√27/√3-√1/3×√12
3 √50+√30/√8-4
4 √24+√216/√6+5
5 （√6-2√15）×√3-6√1/2
6 √2/3-4√216+43√1/6
7 √8+√30-√2
8 √1/7+√63-√112
9 √40-5√1/10+√10
10 √2+√8/√2
11 √2/9+√50+√32
12 （1-√3）（√3+2）
13 （√8+3√6）÷√2-√3×√0.7
14 （-3+√6）（-3-√6）-（√3-1/√3）²
15 ³√0.125-√3 1/16+³√（1-7/8）²
16 √2/3-√216+42√1/6
http://wenku.baidu.com/view/5c781722dd36a32d737581ce.html
计算机自己算啊
什么计算题，自己买些书看看吧
是哪几道？
绛旓細鈭32-3鈭1/2+鈭2 2 鈭12+鈭27/鈭3-鈭1/3脳鈭12 3 鈭50+鈭30/鈭8-4 4 鈭24+鈭216/鈭6+5 5 锛堚垰6-2鈭15锛壝椻垰3-6鈭1/2 6 鈭2/3-4鈭216+43鈭1/6 7 鈭8+鈭30-鈭2 8 鈭1/7+鈭63-鈭112 9 鈭40-5鈭1/10+鈭10 10 鈭2+鈭8/鈭2 ...
绛旓細1.3鈭氾紙1/6锛-4鈭氾紙50锛+30鈭氾紙2/3锛 绛旀3鈭氾紙1/6锛-4鈭氾紙50锛+30鈭氾紙2/3锛 = 3脳鈭6/6-4脳5鈭2+30脳鈭6/3 锛濃垰6/2-20鈭2+10鈭6 2. 锛1-鏍瑰彿2锛/2涔樹互锛1锛嬫牴鍙2锛夛紡2 棰樻槸杩欐牱鐨勪簩鍒嗕箣涓鍑忔牴鍙2涔樹互浜屽垎涔嬩竴鍔犳牴鍙2 绛旀锛氾紙1-鏍瑰彿2锛/2涔樹互锛1锛嬫牴鍙2锛夛紡...
绛旓細甯屾湜鑳藉府鍒颁綘
绛旓細鍏朵腑x=110锛寉=10.锛堝厛鍖栫畝锛屽啀姹傚硷級7.宸茬煡锛坸-1)(x-2锛/3x-4 = x-1鍒嗕箣A + x-2鍒嗕箣B锛屾眰瀹炴暟A锛孊銆8.(1-x锛²/2x锛1.-7ab/c2.(x-4)/23.-a^2*b/2*x^2*b4.2*x/(x^2-1)5.2*a/(a^2-1)6.(x+y)*(x-y)/(x-y)^2=(x+y)/(X-y)=1.27.(...
绛旓細瑙ｇ瓟棰(鍏41鍒) 18. 璁＄畻:(姣忛5鍒,鍏10鍒) (1) (2) 姹備笅鍒楀悇寮忎腑 鐨勫:(姣忛5鍒,鍏15鍒) (1) (2) (3) 璁,鎸囧嚭鐢变簬涓嬪垪鎺ㄧ畻鐨勫摢涓姝ョ殑閿欒,鍥犺屽緱鍑洪敊璇殑缁撹銆(5鍒) 鈭 鈭 鈭 鈭 鈭 宸茬煡,姹 鐨勫钩鏂规牴;(5鍒) 22. 宸茬煡瀹炴暟 銆 婊¤冻 , 姹 鐨勫;(6鍒) 瀵逛笉璧蜂簡,鎴戝灏辫繖涔堝!
绛旓細14銆佽繖棰樻墦鍗伴敊浜嗭紝鍏朵腑涓涓獂搴旇鍐欐垚y锛屼笉璁烘槸鍝釜缁撴灉閮戒竴鏍枫傜敱棰樻剰鐭ワ紝3鈭氾紙3x-7锛=-3鈭氾紙3y+4锛夆埓3x-7=-(3y+4)绉婚」锛屽緱3x+3y=3 鈭磝+y=1 瑕佸浼氬埄鐢ㄧ粷瀵瑰煎拰鏃犵悊寮忕殑鎬ц川鍟婏紝鍙鐭ラ亾寮忓瓙閲岀殑缁撴灉涓瀹氳澶т簬绛変簬0锛屽墠涓閬撻灏变細鍋氫簡銆傜涓夐瑕佺煡閬擄紝绛夊紡涓よ竟绔嬫柟鍚庝緷鐒舵垚绔嬨
绛旓細1.鈭歺-199+y 脳鈭199-x-y 鎵浠+y=199 (x+y銆199涓攛+y銆199)鈭3x-5y-2-m + 鈭2x+3y-m =0 鎵浠3x-5y-2-m=0,2x+3y-m=0 3x-5y=2+m,2x+3y=m,597-8y=2+m,398+y=m m=3779/9 绛旀鏈夌偣鎬紝浣嗘槸鏂规硶搴旇瀵广備綘鑷繁楠岀畻涓涓嬨2.璁1996x³=1997y³=1998...
绛旓細1.灏鸿浣滃浘锛熶互锛0锛1锛変负鍦嗗績锛2涓哄崐寰勪綔鍦嗭紝涓嶺杞翠氦鐐瑰氨鏄牴鍙3锛屾牴鍙5鍦紙0锛2锛変綔鍗婂緞3鐨勫渾銆2.x^2+y^2-2xy-14x+14y+49=(y-x+7)^2=0,y=x-7,2x-3y+5=0 x=26,y=19 x^2-y^2=315
绛旓細3.鑻ュ叧浜巟鐨勪竴鍏冧簩娆℃柟绋媥^2+kx+4k^2-3=0鐨勪袱涓瀹炴暟鏍瑰垎鍒槸x1锛寈2锛屼笖婊¤冻x1+x2=x1*x2,鍒檏鐨勫间负锛坈 锛 娉ㄦ剰锛氬綋k涓-1鏃跺 鍘熸柟绋嬬殑b^2-4ac灏忎簬0 A.-1鎴3/4 B.-1 C.3/4 D.涓嶅瓨鍦 4.锛堜竴棰樺瑙ｏ級宸茬煡鏂圭▼2x^2+mx-4=0鐨勪竴鏍逛负-2锛屾眰瀹冪殑鍙︿竴鏉℃牴鐨勫.锛堢敤涓ょ...
