计算:x-1/x-4-3(x-1)/x-2+2
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计算:x-1/x-4-3(x-1)/x-2+2
(x-1/x)-4-(3(x-1)/x)-2+2
算式是否这样?问题描述不清楚,请加上括号!
再问: x-1/x-4-【3(x-1)】/x-2+(2)
再答: =x-1/x-4-【3(x-1)】/x-2+(2)
=(x) - (1/x)- (4) - (【3(x-1)】/x) -(2) +(2)
= (x) - (1/x)- (4) - (【3(x-1)】/x)
=(x)(x) - (x)(1/x)- (4)(x) - (【3(x-1)】/x)(x)
= (x^2) - (1)- (4x) - 【3(x-1)】
= (x^2) - (1)- (4x) - (3x - 3)
= (x^2) - (1)- (4x) - 3x +3
= (x^2)- (4x) - 3x +3 - (1)
= (x^2)- (7x) + 2
x= 6.702(取至三位小数) or x = 0.298 (取至三位小数)
谢谢
P.S.假如我正确地理解你的算式, 我经过运算,证实答案正确.
算式是否这样?问题描述不清楚,请加上括号!
再问: x-1/x-4-【3(x-1)】/x-2+(2)
再答: =x-1/x-4-【3(x-1)】/x-2+(2)
=(x) - (1/x)- (4) - (【3(x-1)】/x) -(2) +(2)
= (x) - (1/x)- (4) - (【3(x-1)】/x)
=(x)(x) - (x)(1/x)- (4)(x) - (【3(x-1)】/x)(x)
= (x^2) - (1)- (4x) - 【3(x-1)】
= (x^2) - (1)- (4x) - (3x - 3)
= (x^2) - (1)- (4x) - 3x +3
= (x^2)- (4x) - 3x +3 - (1)
= (x^2)- (7x) + 2
x= 6.702(取至三位小数) or x = 0.298 (取至三位小数)
谢谢
P.S.假如我正确地理解你的算式, 我经过运算,证实答案正确.
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