因式分解x4+x3+2x2-x+3
问题描述:
因式分解x4+x3+2x2-x+3
答
x4+x3+2x2-x+3=x^4+2x^3+3x^2-x^3-2x^2-3x+x^2+2x+3=x^2(x^2+2x+3)-x(x^2+2x+3)+(x^2+2x+3)=
(x^2+2x+3)(x^2-x+1)2x4-x3+6x2-x+6怎么分解呢?