因式分解:x*x+3ax-10a*a-x+2a
问题描述:
因式分解:x*x+3ax-10a*a-x+2a
答
x*x+3ax-10a*a-x+2a
=(x+5a)(x-2a)-(x-2a)
=(x-2a)(x+5a-1)