分解因式喔求完整点 1.y²-9(x+y)² 2.(x+y)²-16(x-y)²

问题描述:

分解因式喔求完整点 1.y²-9(x+y)² 2.(x+y)²-16(x-y)²
a²b²-0.01 x²y-2xy²+y三次方 16-(2a+3b)² (a²+4)²-16a² a²(a-b)²-b²(a+b)²

y²-9(x+y)² =[y+3(x+y)][(y-3(x+y)]=(3x+4y)(-3x-2y)=-(3x+4y)(3x+2y)(x+y)²-16(x-y)²=[x+y+4(x-y)][(x+y-4(x-y)]=(5x-3y)(5y-3x)a²b²-0.01=(ab+0.1)(ab-0.1) x²y-2xy²...