【单项式乘多项式(要完整过程!)急!】5x(x-1)-(2x+3)(x-5)
问题描述:
【单项式乘多项式(要完整过程!)急!】5x(x-1)-(2x+3)(x-5)
答
5x(x-1)-(2x+3)(x-5)
=5x²-5x-(2x²-10x+3x-15)
=5x²-5x-2x²+10x-3x+15
=3x²+2x+15