若6x^3+3x^2-2x+k能被2x+1整除,则k的值为______

问题描述:

若6x^3+3x^2-2x+k能被2x+1整除,则k的值为______

6x^3+3x^2-2x+k=3x^2(2x+1)-(2x-k)
k=-1