因式分解 x^3-3x^2-10x

问题描述:

因式分解 x^3-3x^2-10x

就说这个多项式能被另一个多项式整除 几道类似的用到综合除法分解因式的题目x^3+x^2-10x+8=(x-2)(x^2+3x-4)=(x-2)(x+4)(x-1) 4(x

=x(X^2-3X-10)
=X(x-5)(X-2)

x(x-5)(x+2)

x³-3x²-10x
=x(x²-3x-10)
=x(x-5)(x+2)

x^3-3x^2-10x
=x(x^2-3x-10)
=x(x-5)(x+2)

x(x²-3x-10)
x(x-5)(x-2) 十字相乘法

x^3-3x^2-10x
=X(X^2-3X-10)
=X(X-5)(X+2)

提公因式x然后十字相乘法:
x(x-5)(x+2)