16+24(x+y)+9(x+y)^2
(x+y)^2-16(x-y)^2
16(x+y)`-24(x+y)+9 `表示平方 因式分解
因式分解 16(x-y)^2-9(x+y)^2
因式分解 (1).(x+y)(x+y-6)+9 (2).x²-16y²-x-4y
分解因式16(x-y)²+24(y²-x²)+9(x+y)²
1、x(x-y)(x+y)-x(x+y)^2
已知4x=9y求(1)x+y/y (2)y-x/2x
2(x+y) 3x+3y=24 x+y/2x x y/2y= 1
已知2/x+2/y=根号24,求 x/y(x-y) - y/x(x-y)的值
已知2/x 2/y=根号24,求 x/y(x-y) - y/x(x-y)的值
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
(1)57*99+44*99 (2)9x^2+16(x+y)^2-24x(x+y) 因式分解