xy-x+y-1如何因式分解?
问题描述:
xy-x+y-1如何因式分解?
答
xy-x+y-1=x(y-1)+y-1
=(x+1)(y-1)
xy-x+y-1如何因式分解?
xy-x+y-1=x(y-1)+y-1
=(x+1)(y-1)