25x²-16y²
16(x+y)²-25(x-y)² 因式分解
因式分解16(x+y)²+40(x²-y²)+25(x-y)²
分解因式16(x+y)²+40(x-y)²+25(x-y)²
因式分解:x²(x-y)+(y-x)
因式分解 16(x+y)²-25(
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
求(x-2y)²-4(2x-y)²=?16(x+y)²-25(x-y)²=?a的
因式分解(1)、m²(x-y)+n²(y-x) (2)16(x+y)²-25(x-y)
2.(x+y)²(x-y)²-(x-y)(x+y)(x²+y²)
分解因式 16(x-y)²-9(x+y)²
(x-y)²+16(x-y)+( )=( )²
因式分解:9(x-y)²-25(x+y)²