(X+2)(X平方+4)(X-2)计算.快快快快快快快快快快快快快快快

问题描述:

(X+2)(X平方+4)(X-2)计算.快快快快快快快快快快快快快快快

(x+2)(x²+4)(x-2)
=(x+2)(x-2)(x²+4)
=(x²-4)(x²+4)
=x四次方-16