x^3+2x^2-5x-6因式分解
问题描述:
x^3+2x^2-5x-6因式分解
答
x³+2x²-5x-6
=(x³+x²)+(x²-5x-6)
=x²(x+1)+(x-6)(x+1)
=(x²+x-6)(x+1)
=(x-2)(x+3)(x+1)