25(y-x)2-16(x+y)2.
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25(y-x)2-16(x+y)2.
![25(y-x)2-16(x+y)2.](/uploads/image/z/3165303-39-3.jpg?t=25%EF%BC%88y-x%EF%BC%892-16%EF%BC%88x%2By%EF%BC%892%EF%BC%8E)
25(y-x)2-16(x+y)2
=[5(y-x)]2-[4(x+y)]2.
=[5(y-x)+4(x+y)][5(y-x)-4(x+y)],
=(5y-5x+4x+4y)(5y-5x-4x-4y),
=(9y-x)(y-9x),
=[5(y-x)]2-[4(x+y)]2.
=[5(y-x)+4(x+y)][5(y-x)-4(x+y)],
=(5y-5x+4x+4y)(5y-5x-4x-4y),
=(9y-x)(y-9x),
(x-y/x+2y)³
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
(x-y)(x-2y)-(3x-2y)(x-3y)
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
4(x+y)^2-20(x-y)+25
(x-2y)²+(2x-4y)(x+y)+(x+y)²
分解下列因式:x(y-x)+y(y-x)-(x-y)^2
(x-y)的四次方(x-y)-2(x-y)²(y-x)³等于?
因式分解:16(x+ y)∧2 +121(x-y)∧2-88(x +y)(x-y)
计算:(x-4y)(2x+3y)-(x+2y)(x-y).
因式分解 (1).(x+y)(x+y-6)+9 (2).x²-16y²-x-4y