a³-4a.(x²+y²)²-4x²y² (a+b)²-10a-10b+25a³-4a.(x²+y²)²-4x²y² (a+b)²-10a-10b+25 分解因式
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a³-4a.(x²+y²)²-4x²y² (a+b)²-10a-10b+25a³-4a.(x²+y²)²-4x²y² (a+b)²-10a-10b+25 分解因式
a³-4a.(x²+y²)²-4x²y² (a+b)²-10a-10b+25
a³-4a.(x²+y²)²-4x²y² (a+b)²-10a-10b+25 分解因式
a³-4a.(x²+y²)²-4x²y² (a+b)²-10a-10b+25a³-4a.(x²+y²)²-4x²y² (a+b)²-10a-10b+25 分解因式
1.A(A平方-4)=A(A+2)(A-2) 2.((X平方+Y平方)+2XY)乘以((X平方+Y平方)-2XY) 3.((A+B)-5)的平方