(x-1)的平方=3(x-1)

\u89e3\u65b9\u7a0b:(x-1)\u7684\u5e73\u65b9=3

(x-1)\u7684\u5e73\u65b9=3
x-1=\u221a3\u6216x-1=-\u221a3
x=1+\u221a3\u6216x=1-\u221a3

\u6b64\u65b9\u7a0b\u6709 \u4e24\u79cd\u60c5\u51b5 1. \u5f53x=1 \u7684\u65f6\u5019\u6210\u7acb\uff0c
2.\u89e3\u65b9\u7a0b\uff1a\u4e24\u8fb9\u540c\u65f6\u7ea6\u53bb\uff08x-1\uff09\u5f97\u5230\u7684\u662f
3\uff08x-1\uff09=x
\u8fd9\u53ef\u4ee5\u5f97\u5230 X=3/2
\u7efc\u4e0a\u6240\u8ff0\uff1ax1=1 \u6216x2=3/2 \u4e3a\u65b9\u7a0b\u7684\u89e3

（x-1）²=3（x-1），
（x-1）（x-1-3）=0，
（x-1）（x-4）=0，
x1=1，
x2=4

(x-1)鐨勫钩鏂=3(x-1)
绛旓細锛坸-1锛夛紙x-1-3锛=0锛岋紙x-1锛夛紙x-4锛=0锛寈1=1锛寈2=4

(x涓1)鐨勫钩鏂=3,x=?
绛旓細锛坸-1)²=3 鏁寸悊寰楋細x-1=卤鈭3 瑙ｅ緱;x=1+鈭3鎴杧=1-鈭3銆

(x-1)鐨勫钩鏂=3,x绛変簬澶氬皯
绛旓細x=鈭3+1鎴-鈭3+1

涓鍏冧簩娆℃柟绋 瑙ｆ柟绋(x-1)(x-2)=3瑙:(x-1)(x-2)=1*3
绛旓細锛1锛涓嶅 浣犺繖绉嶆柟娉曞彧鑳藉湪宸﹁竟鐨勫紡瀛=0鐨勬椂鍊 杩欎釜鏂圭▼搴旇杩欐牱瑙 瑙ｏ細x²-3x+2-3=0 x²-3x-1=o (x-1.5)²-3.25=0 (x-1.5)²=3.25 寮骞虫柟 鍚庨潰鎵撲笅鏉ュお楹荤儲浜 鑷繁鍐 锛2锛夌湅鍒拌繖绉嶅紡瀛 棣栧厛瑕佹兂鍒伴厤鏂 鍙浣縜鍦ㄧ被浼硷紙a+鎴-b锛²+...

2x鐨勫钩鏂-4x-1=0(鍏紡鍙戞垨閰嶆柟娉)
绛旓細2x鐨勫钩鏂-4x-1=0 瑙ｏ細閰嶆柟寰楋細2x鐨勫钩鏂-4x+2-2-1=0 2锛坸鐨勫钩鏂-2x+1锛=3 锛坸-1锛夌殑骞虫柟=3/2 涓よ竟寮骞虫柟寰楋細x-1=卤鈭氾紙3/2锛x=(2+鈭3)/2 鎴栬厁=(2-鈭3)/2

(x-1)鐨勫钩鏂澶т簬3鎬庝箞瑙
绛旓細(x-1)锛炴牴鍙3鎴(x-1)锛滐紞鏍瑰彿3锛屽啀缁х画姹傝В

3(x-1)骞虫柟-1=0
绛旓細3(x-1)骞虫柟-1=0 3(x-1)骞虫柟=1 (x-1)骞虫柟=1/3 x-1=卤鏍瑰彿3鍒嗕箣涓 x=1卤鏍瑰彿3鍒嗕箣涓

x(2鈪-1)=3(2x-1)鐨瑙
绛旓細鍥

(x+1)鐨勫钩鏂绛変簬3,姹倄绛変簬鍑
绛旓細涓よ竟鍚屾椂寮骞虫柟锛x+1绛変簬卤鏍瑰彿涓3锛寈绛変簬姝ｈ礋鏍瑰彿涓3鍑1

璇曟瘮杈x骞虫柟+x-1涓3(x-1)鐨澶у皬
绛旓細绛:X2+X-1-3锛圶-1锛=X2-2X+2=(X-1)2+1鎭掑ぇ浜0 锛屾墍浠2+X-1澶т簬3锛圶-1锛

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