把(x-2)(x-3)(x-4)(x-6)-6x2因式分解

问题描述:

把(x-2)(x-3)(x-4)(x-6)-6x2因式分解

原式=[(x-2)(x-6)][(x-3)(x-4)]-6x^2
=(x^2-8x+12)(x^2-7x+12)-6x^2
=(x^2+12)^2-15x(x^2+12)+50x^2
=(x^2-10x+12)(x^2-5x+12)