因式分解2x²-8x-24
问题描述:
因式分解2x²-8x-24
答
2(x-2)²-32
答
2x²-8x-24
=2(x²-4-12)
=2*(x-6)(x+2)
答
原式=2(x²-4x-12)
=2(x+2)(x-6)
答
2(x-6)(x-2)