因式分解2x²-8x-24

问题描述:

因式分解2x²-8x-24

2(x-2)²-32

2x²-8x-24
=2(x²-4-12)
=2*(x-6)(x+2)

原式=2(x²-4x-12)
=2(x+2)(x-6)

2(x-6)(x-2)