解方程:kx²-(k-1)x-2k-2=0
问题描述:
解方程:kx²-(k-1)x-2k-2=0
答
kx²-(k-1)x-2k-2=0=(x-2)(kx+k+1),
——》x-2=0,即x=2,
或kx+k+1=0,即x=-(k+1)/k.