x^3+x^2-2x-2在实数范围内把因式分解

分类: 作业答案 • 2021-12-19 17:22:18

问题描述：

答

x^3+x^2-2x-2
=x^2(x+1)-2(x+1)
=(x+1)(x^2-2)
=(x+1)(x-√2)(x+√2)

答

x^3+x^2-2x-2
=x^2*(x+1)-2(x+1)
=(x+1)(x^2-2)
=(x+1)(x+√2)(x-√2)

答

x^3+x^2-2x-2
=x^3+x^2-(2x+2)
=x^2(x+1)-2(x+1)
=(x^2-2)(x+1)
=(x-√2)(x+√2)(x+1)