因式分解9(x+y)²-4(x-y)
因式分解:25(x+y)²-9(x-y)²;(x+y)²-4(x+y-1).
因式分解 (1).(x+y)(x+y-6)+9 (2).x²-16y²-x-4y
因式分解:(1)x²+x (2)4x²-9y (3)x²y-4y
因式分解y²-9(x+y)² ,
因式分解(x³+y³)²-9x²y²(x+y)²
因式分解(x+y)²(x-y)-(x+y)(x²+y²)
因式分解 -5x³y(x-y)³+20y【x²(y-x)】²
x(x-y)-y(y-x)+(x-y)²因式分解
因式分解9(x-y)²+12(x²-y²)+4(x+y)²
因式分解 1.-x² +4xy-4y² 2.4(x+y)²-9(x-y)²
1.因式分解 4(x-y)²-9(x+y)²
(x+y)²-4 x²因式分解