(x2-2x)(x-2x+5)怎么化简
问题描述:
(x2-2x)(x-2x+5)怎么化简
答
(x²-2x)(x²-2x+5)
=(x²-2x)²+5(x²-2x)
=x^4-4x^3+x²+5x²-10x
=x^4-4x^3+6x²-10x