计算:(x+1)(x-2)(x-3)(x-6)

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计算:(x+1)(x-2)(x-3)(x-6)

计算:(x+1)(x-2)(x-3)(x-6)
计算:(x+1)(x-2)(x-3)(x-6)

计算:(x+1)(x-2)(x-3)(x-6)
(x+1)(x-2)(x-3)(x-6)=
=(x+1)(x-6)(x-2)(x-3)
=(x^2-5x-6)(x^2-5x+6)
=(x^2-5x)^2-36
=x^4-10x^3+25x^2-36

你是怎么读书的啊!!!

对阿,你怎么读书的阿

x^4-10x^3+25x^2-36

x^4-10x^3+25x^2-26
用(x+1)(x-6),(x-2)(x-3)
得(x^2-5x-6)(x^2-5x+6)
设x^2-5x=y
(y-6)(y+6)=y^2-36=(x^2-5x)^2-36=x^2(x-5)^2-36
=x^4-10x^3+25x^2-26

一步步算```