对于ab两数.我们定义一种新的运算符号*.即a*b=21a-95b.若8*x=-22.求x的值

\u5b9a\u4e49\u67d0\u79cd\u8fd0\u7b97\uff1c \uff1e,a\uff1c \uff1eb=a^2-ab+a-1,\u6c423\uff1c \uff1e6\u7684\u503c\u548c\uff081\uff1c \uff1e3\uff09\uff1c \uff1e\uff08-3\uff09\uff0e\uff1c \uff1e\u4e3a\u4ec0\u4e48\u7b26\u53f7\uff1f

3\uff1c\uff1e6=3²-3\u00d76\uff0b3\uff0d1=\uff0d7

1\uff1c\uff1e3=1²-1\u00d73\uff0b1\uff0d1=-2

\uff081\uff1c \uff1e3\uff09\uff1c \uff1e\uff08-3\uff09
=\uff08-2\uff09\uff1c\uff1e\uff08-3\uff09
=\uff08-2\uff09²-\uff08-2\uff09\u00d7\uff08-3\uff09+\uff08-2\uff09-1
=-5

\u603b\u7ed3\u89c4\u5f8b\uff0c\u5f97\u5230\uff1aA&B=2A-B

\u6240\u4ee5\uff0c7&2=7*2-2=12

8*x=21*8-95x=-22,168-95x=-22, 95x=190,x=2

∵a*b=21a-95b
∴8*x=21×8-95X
∴21×8-95X=-22
-95X=-22-168
-95X=-190
X=2

8*x=-22
21×8-95x=-22
168-95x=-22
-95x=-190
x=2

∵a*b=21a-95b
∴8*x=21×8-95X
∴21×8-95X=-22
-95X=-22-168
-95X=-190
X=2

瀵逛簬ab涓ゆ暟.鎴戜滑瀹氫箟涓绉嶆柊鐨杩愮畻绗﹀彿*.鍗砤*b=21a-95b.鑻8*x=-22...
绛旓細8*x=21*8-95x=-22,168-95x=-22, 95x=190,x=2

瀵逛簬a,b涓ゆ暟,鎴戜滑瀹氫箟涓绉嶆柊杩愮畻 * ,寰楀埌21a-95b,鍗砤*b=21a-95b.鑻8...
绛旓細8*x=21脳8-95x=-70,閭ｄ箞95x=21脳8+70锛泋=238/95锛岃繖绉嶉灏辨槸鎸夌収棰樹腑鐨勭ず渚嬩竴姝ユ鏉ュ氨濂戒簡锛涒樺鏋滆繕涓嶆噦浜嗗彲浠ュ幓杩欓噷闂棶鐪

1銆瀵逛簬涓涓疄鏁癮銆乥,鎴戜滑瑙勫畾涓绉嶆柊杩愮畻鈥*鈥;a*b=4ab銆 (1)瑙ｆ柟绋...
绛旓細1銆瀵逛簬涓涓疄鏁癮銆乥锛鎴戜滑瑙勫畾涓绉嶆柊杩愮畻鈥*鈥濓紱a*b=4ab銆傦紙1锛夎В鏂圭▼锛3*x-2*4=0 (1) 4脳3x锛4脳2脳4锛0 12x-32锛0 12X=32 X=3/8 3銆佸皬鏉庨獞鑷杞︿粠A鍦板埌B鍦帮紝灏忔槑楠戣嚜琛岃溅浠嶣鍦板埌A鍦帮紝涓や汉閮藉寑閫熷墠杩涳紝宸茬煡涓や汉鍦ㄤ笂鍗8鏃跺嚭鍙戯紝鍒颁笂鍗10鏃讹紝涓や汉杩樼浉璺36鍗冪背锛屽埌涓崍12鏃...

涓や釜瀹炴暟a,b,鎴戜滑瑙勫畾涓绉嶆柊鐨杩愮畻*:a*b=4ab 鑻ユ棤璁簒涓轰綍鍊,鎬绘湁a *...
绛旓細a*x=4ax=x 浜庢槸4a=1 浜庢槸a=1/4

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鑻ab涓烘湁鐞鏁版垜浠畾涔夋柊鐨勪竴绉杩愮畻
绛旓細鍘熷紡=锛2脳1-2锛夆姇3锛=0鈯3锛=2脳0-3锛=-3锛庢晠绛旀涓猴細-3锛

瀵逛簬涓涓疄鏁癮,b,鎴戜滑瑙勫畾涓绉嶆柊杩愮畻*:a*b=4ab銆傛棤璁*涓轰綍鍊,鎬绘湁a*...
绛旓細a*x=4ax 鈭4ax=x 褰搙=0鏃讹紝a鎴戜换鎰忓疄鏁 褰搙鈮0鏃讹紝a=1/4

鎴戜滑瀹氫箟涓绉嶆柊杩愮畻:a*b=ab+a 2 -b 2 ,閭ｄ箞(x+y)*(x-y)=___.
绛旓細锛坸+y锛*锛坸-y锛夛紝 =锛坸+y锛夛紙x-y锛+锛坸+y锛 2 -锛坸-y锛 2 锛 =x 2 -y 2 +4xy锛

鎴戜滑瀹氫箟涓绉嶆柊杩愮畻:鈻(a,b)=ab+a+b,鈼(a,b)=a鐨勫钩鏂瑰噺ab+b鐨勫钩鏂,姹...
绛旓細鈻筹紙2,3锛=2脳3+2+3=11 鈼囷紙3锛2锛=3²-3脳2+2²=7 鍘熷紡 = 鈻筹紙11,7锛=11脳7+7+11=95

瀵逛簬涓涓疄鏁癮銆乥,鎴戜滑瑙勫畾涓绉嶆柊杩愮畻 * :a*b=3ab銆傚垯5*(-3)鐨勫间负
绛旓細5*(-3)=3*5*(-3)=-45

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