二分之一ab²-2a等于
问题描述:
二分之一ab²-2a等于
答
1/2ab²-2a
=1/2a(b²-4)
=1/2a(b+2)(b-2)
答
二分之一ab²-2a
=1/2ab²-2a
=a(1/2b²-2)
=1/2a(b²-4)
=1/2a(b+2)(b-2)