解方程(x-1)的平方-1=8
\u89e3\u65b9\u7a0b\uff1a\uff08x\u7684\u5e73\u65b9-1\uff09\u5206\u4e4b8+1=\uff08x-1\uff09\u5206\u4e4b\uff08x+3)\u4e24\u8fb9\u4e58\u4ee5(x+1)(x-1)\u5f97
8+(x+1)(x-1)=(x+3)(x+1)
8+x²-1=x²+4x+3
4=4x
x=1
\u7ecf\u68c0\u9a8c\uff1ax=1\u662f\u65b9\u7a0b\u7684\u589e\u6839
\u2234\u539f\u65b9\u7a0b\u65e0\u89e3
\u2460\uff08x-1\uff09²=12
x-1=\u00b12\u221a3
x=1+2\u221a3\u6216x=1-2\u221a3
\u2461\uff08x+2\uff09³=-8
x+2=-2
x=-4
\u24621/2\uff08x+3\uff09³=4
(x+3)³=8
x+3=2
x=-1
(x-1)²-9=0
(x-1+3)(x-1-3)=0
(x+2)(x-4)=0
x+2=0 x-4=0
∴X1=-2
X2=4
(x-1)的平方-1=8
(x-1)²=9
x-1=3或x-1=-3
x=4或x=-2
(x-1)的平方-1=8
(x-1)的平方=9
x-1=3 或x-1=-3
x=4或-2
（X-1）2=8+1=9
X-1=3或x-1=-3
x=4或x=-2
x=4，x=-2
绛旓細(x-1)鐨勫钩鏂-1=8 (x-1)²-9=0 (x-1+3)(x-1-3)=0 (x+2)(x-4)=0 x+2=0 x-4=0 鈭碭1=-2 X2=4
绛旓細锛坸-1锛2-1=8 锛坸-1锛2=9 (X-1)=3鎴杧-1=-3 鎵浠=4鎴x=-2 甯屾湜瀵逛綘鏈夊府鍔
绛旓細瑙ｏ細锛坸-1锛锛2 x2锛8 锛坸-1锛夛季2锛4 x-1锛2鎴杧-1锛-2 鐢眡-1锛2寰梮锛3锛岀敱x-1锛-2寰x锛-1 鏁呭師鏂圭▼鐨瑙ｄ负x锛3鎴杧锛-1
绛旓細3( x+1)鐨勫钩鏂-1=8 3( x+1)鐨勫钩鏂=9 ( x+1)鐨勫钩鏂=3 x+1=卤鈭3 x=卤鈭3-1
绛旓細(x-1)鐨勫钩鏂-8=0 (x-1)鐨勫钩鏂=8 x-1=卤2鈭2 x=1卤2鈭2 璇峰ソ璇 濡傛灉浣犺鍙垜鐨勫洖绛旓紝鏁鍙婃椂閲囩撼锛寏濡傛灉浣犺鍙垜鐨勫洖绛旓紝璇峰強鏃剁偣鍑汇愰噰绾充负婊℃剰鍥炵瓟銆戞寜閽畘~鎵嬫満鎻愰棶鐨勬湅鍙嬪湪瀹㈡埛绔彸涓婅璇勪环鐐广愭弧鎰忋戝嵆鍙倊浣犵殑閲囩撼鏄垜鍓嶈繘鐨勫姩鍔泘~O(鈭鈭)O锛岃寰楀ソ璇勫拰閲囩撼锛屼簰鐩稿府鍔 ...
绛旓細(x-1)^3=8=2^3 =>x-1=2 =>x=3
绛旓細鍥炵瓟锛(x-1)骞虫柟=x骞虫柟-2x+1
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绛旓細锛坸-1锛²=1-x 瑙ｆ柟绋 x²-2x+1-1+x=0 x²-x=0 x锛坸-1锛=0 鍙緱x=0鎴杧-1=0 瑙ｅ緱x1=0鎴杧2=1
