因式分解(过程) -(2x-y)^2+10(2x-y)-25 -6x^2-3x^3-3xy^2 -32x^3-16x^2-2x
问题描述:
因式分解(过程) -(2x-y)^2+10(2x-y)-25 -6x^2-3x^3-3xy^2 -32x^3-16x^2-2x
答
-(2x-y)^2+10(2x-y)-25原式=-[(2x-y)^2-10(2x-y)+25]=-(2x-y-5)²-6x^2y-3x^3-3xy^2原式=-3x(2xy+x²+y²)=-3x(x+y)²-32x^3-16x^2-2x原式=-2x(16x²+8x+1)=-2x(4x+1)²