因式分解:-2x^2+13xy-18y^2=( )
问题描述:
因式分解:-2x^2+13xy-18y^2=( )
一楼的,是-2x^2不是2x^2~
答
-2x^2+13xy-18y^2=-(x-2y)(2x-9y)
因式分解:-2x^2+13xy-18y^2=( )
一楼的,是-2x^2不是2x^2~
-2x^2+13xy-18y^2=-(x-2y)(2x-9y)