多项式kx²-6xy-8y²可分解成2(x+y)(x-4y),则k=
问题描述:
多项式kx²-6xy-8y²可分解成2(x+y)(x-4y),则k=
答
kx²-6xy-8y²=2(x+y)(x-4y)
则k=2