因式分解:x³-x²-6x 因式分解:(x+1)(x-2)-4

问题描述:

因式分解:x³-x²-6x 因式分解:(x+1)(x-2)-4

x3-x2-6x=x(x2-x-6)=x(x-3)(x+2)
(x+1)(x-2)-4
=x2-x-6=(x-3)(x+2)

1)x ³ - x ² - 6 x
= x(x ² - x - 6)
= x(x - 3)(x + 2)
2)(x + 1)(x - 2)- 4
= x ² - x - 2 - 4
= x ² - x - 6
= (x - 3)(x + 2)

x(x-3)(x+2)和(x-3)(x+2)

x³-x²-6x 因式分
= x ( x²-x-6)
= x (x-3) (x+2)

因式分
x³-x²-6x 因式分
=x(x²-x-6)
=x(x-3)(x+2)
(x+1)(x-2)-4
=x²-x-2-4
=x²-x-6
=(x-3)(x+2)