乘法公式计算(x2-2x)(x2-2x-3)
问题描述:
乘法公式计算(x2-2x)(x2-2x-3)
答
(x2-2x)(x2-2x-3)
=(x^2-2x)^2-3(x^2-2x)
=x^4-4x^3+4x^2-3x^2+6x
=x^4-4x^3+x^2+6x