25x²y²-36,
x(x-y)-y(y-x)+(x-y)²因式分解
25(x-y)²-10(y-z)+1因式分解
因式分解:x²(x-y)+(y-x)
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
2.(x+y)²(x-y)²-(x-y)(x+y)(x²+y²)
16(x+y)²-25(x-y)² 因式分解
因式分解:9(x-y)²-25(x+y)²
因式分解:25(x-y)²+10(y-x)+1
4(x+y)²-20(x+y)+25
因式分解:25(x+y)²-9(x-y)²;(x+y)²-4(x+y-1).
因式分解16(x+y)²+40(x²-y²)+25(x-y)²
已知x²+y²=25,x+y=7,且x>y,求x-y的值