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