题目
（x-4）m=x-4且m不等于1,2x的平方（3x-x的平方-2）+1
提问时间：2021-03-28
答案
（x-4）m=x-4
(x-4)m-(x-4)=0
(x-4)(m-1)=0
m≠1
m-1≠0
所以x-4=0
x=4
原式=6x³-2x^4-4x²+1
=384-512+64+1
=-63
(x-4)m-(x-4)=0
(x-4)(m-1)=0
m≠1
m-1≠0
所以x-4=0
x=4
原式=6x³-2x^4-4x²+1
=384-512+64+1
=-63
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