[(5m+2n)(5m-2n)+(3m-2n)²]÷(-2m)
(n-m)^3×(m-n)^2-(m-n)^5
因式分解(n-m)^3(m-n)^2-(m-n)^5
16(3m-2n)²-25(m-n)²
计算[5(m+n)2(m-n)]3÷【3(m+n)2(n-m)]2
[2(m+n)^5-3(m+n)^4+(-m-n)^3]÷[2(m+n)^3]
m²+n²=5,mn=2,求代数式[(6m²-5m(-m+3n)+4m(-4m+5/2n)
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
已知m-n=2,求代数式m(m²-2mn=n²)+(m-5n)
(m+5n)^2-2(5n+m)(n-3m)+(3m-n)^2
因式分解(2m-3n)²-2m+3n
计算:5(m+n)(m-n)-2(m+n)^2-3(m-n)^2
[5m(3m-n)+2n(n-3m)]/(3m-n)