初三数学因式分解计算题 求40道初二数学因式分解计算题还有答案（简单点的）
\u6570\u5b66\u8ba1\u7b97\u9898\u56e0\u5f0f\u5206\u89e39a²-b²=(3a-b)(3a+b)
-1/4x²y²+0.09=(0.3-½xy)(0.3+½xy)
(m-n)²-1=(m-n-1)(m-n+1)
4x²-(x-y)²=(2x-x+y)(2x+x-y)=(x+y)(3x+y)
-(a+b)²+(2a-3b)²=(2a-3b-a-b)(2a-3b+a+b)=(a-4b)(3a-2b)
49(x-2)²-25(x-3)²=(7x-14-5x+15)(7x-14+5x-15)=(2x+1)(12x-29)
101²-99²=(101-99)(101+99)=2x200=400
1.22²x9-133²x4=(1.22\u00d73-1.33\u00d72)(1.22x3+1.33x2)=(3.66-2.66)(3.66+2.66)=6.32
1000²/(252²-248²)=1000²/(252-248)(252-248)=1000²/500x4=500
(1-1/2²)(1-1/3²)(1-1/4²).....(1-1/100²)
=(1-1/2)(1+1/2)(1-1/3)(1+1/3)(1-1/4)(1+1/4).....(1-1/100)(1+1/100)
=1/2x3/2x2/3x4/3x3/4x5/4x......x98/99x100/99x99/100x101/100
=1/2x101/100
=101/200
(2x\uff0b1)(x\uff0b1)\uff0b(2x\uff0b1)(x\uff0d3)\uff1d2(x-1)(2x+1)
2ax^2\uff0d3x\uff0b2ax\uff0d3\uff1d(x+1)(2ax-3)
x(y\uff0b2)\uff0dx\uff0dy\uff0d1\uff1d(x-1)(y+1)
(x^2\uff0d3x)\uff0b(x\uff0d3)^2\uff1d(x-3)(2x-3)
9x^2\uff0d66x\uff0b121\uff1d(3x-11)^2
8\uff0d2x^2\uff1d2(2-x)(2+x)
x^4\uff0d1\uff1d(x-1)(x+1)(x^2+1)
x^2\uff0b4x\uff0dxy\uff0d2y\uff0b4\uff1d(x+2)(x-y+2)
4x^2\uff0d12x\uff0b5\uff1d(2x-1)(2x-5)
21x^2\uff0d31x\uff0d22\uff1d(21x+11)(x-2)
4x^2\uff0b4xy\uff0by2\uff0d4x\uff0d2y\uff0d3\uff1d(2x+y-3)(2x+y+1)
9x^5\uff0d35x^3\uff0d4x\uff1dx(9x^2+1)(x+2)(x-2)
绛旓細1.鍥犲紡鍒嗚В3a^3b^2c锛6a^2b^2c^2锛9ab^2c^3锛3ab^2 c(a^2-2ac+3c^2)2.鍥犲紡鍒嗚Вxy锛6锛2x锛3y锛(x-3)(y-2)3.鍥犲紡鍒嗚Вx^2(x锛峺)锛媦^2(y锛峹)锛(x+y)(x-y)^2 4.鍥犲紡鍒嗚В2x^2锛(a锛2b)x锛峚b锛(2x-a)(x+b)5.鍥犲紡鍒嗚Вa^4锛9a^2b^2锛漚^2(a+3b)(a-3b)...
绛旓細3. x^2-4y^2-3x+6y==(x+2y)(x-2y)-3(x-2y)=(x-2y)(x+2y-3)4. -x^3-2x^2-x+4xy^2=-x(x²+2x+1-4y²)=-x(x+1-2y)(x+1+2y)5. 9a^2-4b^2-6a+1=9a²-6a+1-4b²=(3a-1)²-4b²=(3a-1+2b)(3a-1-2b)6. x^2...
绛旓細鍥犲紡鍒嗚В鐨勭函璁＄畻棰锛屾垜浠繖閲屾湁100涓棰樼洰鍙婂叾绛旀锛屼互涓嬫槸鍏朵腑鐨勪簲閬撶ず渚嬶細1. 瀵逛簬琛ㄨ揪寮4a2b2-(a2 + b2 - c2)2锛岄氳繃鍥犲紡鍒嗚В锛屾垜浠緱鍒帮細[(2ab+a2 + b2 - c2)(2ab-a2 - b2 + c2)] = [(a+b)²-c2][c2-(a-b)²] = (a+b+c)(a+b-c)(c+a-b)(c-a+b)2....
绛旓細1.鍥犲紡鍒嗚Вx3锛2x2锛2x锛1 2.鍥犲紡鍒嗚Вa2b2锛峚2锛峛2锛1 3.璇曠敤闄ゆ硶鍒ゅ埆15x2锛媥锛6鏄笉鏄3x锛2鐨勫嶅紡銆4.(1)鍒ゅ埆3x锛2鏄笉鏄6x2锛媥锛2鐨勫洜寮忥紵锛堝啓鍑璁＄畻寮忥級(2)濡傛灉鏄紝璇峰洜寮忓垎瑙6x2锛媥锛2銆5.a锛19912 锛宐锛9912 锛(1)姹俛2锛2ab锛媌2涔嬪硷紵 (2)a2锛峛2涔嬪硷紵6.鍒ゅ埆2x锛1...
绛旓細x(x-1)-9(x-1)=0 (x-9)(x-1)=0 x=9鎴杧=1 (2)0=3x(x-3)-2(x-3)0=(3x-2)(x-3)3x-2=0鎴杧-3=0 x=2/3鎴杧=3 (3)(2x+1+2)(2x+1-2)=0 2x+3=0鎴2x-1=0 x=-3/2鎴杧=1/2 (4)(2(2x-3)-3)(2x-3)=0 2(2x-3)-3=0鎴2x-3=0 x=9/4鎴杧=3...
绛旓細涓閬撻鐩,寰堢畝鍗,浣嗘垜涓嶄細鍋 659.4鍗冨厠 锛屽厔寮熺粰鍒嗗摝 鍛ㄩ暱C锛2蟺R灏辨槸鍗婂緞鍜屽渾鍛ㄧ巼鐨勭Н鐨2鍊 鍦嗛敟鐨勪綋绉疺=1/3鈭廟²h銆鍥犲紡鍒嗚В 寰堢畝鍗 4X²-22X+10=2锛2x²-11x+5锛=2锛坸-5)(2x-1)涓閬撳緢绠鍗曠殑鍒嗗紡鍥犲紡鍒嗚В鐨璁＄畻棰 (a+2)(a2+4)(a-2)-(a2+8)(a2-...
绛旓細鍥犲紡鍒嗚В3a3b2c锛6a2b2c2锛9ab2c3锛3ab^2 c(a^2-2ac+3c^2)3.鍥犲紡鍒嗚Вxy锛6锛2x锛3y锛(x-3)(y-2)4.鍥犲紡鍒嗚Вx2(x锛峺)锛媦2(y锛峹)锛(x+y)(x-y)^2 5.鍥犲紡鍒嗚В2x2锛(a锛2b)x锛峚b锛(2x-a)(x+b)6.鍥犲紡鍒嗚Вa4锛9a2b2锛漚^2(a+3b)(a-3b)7.鑻ュ凡鐭3锛3x2锛4鍚湁x...
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