(m+2n)^2-6(m+2n)(2m-n)+9(n-2m)^2 因式分解
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(m+2n)^2-6(m+2n)(2m-n)+9(n-2m)^2 因式分解
(m+2n)^2-6(m+2n)(2m-n)+9(n-2m)^2 因式分解
(m+2n)^2-6(m+2n)(2m-n)+9(n-2m)^2 因式分解
(m+2n)^2-6(m+2n)(2m-n)+9(n-2m)^2
=(m+2n)^2+6(m+2n)(n-2m)+[3(n-2m)]^2
=[(m+2n)+3(n-2m)]^2
=(5n-5m)^2
=25(n-m)^2
(1),(-m-n)(-m+n) (2),(-m+n)(m-n)
(m-2n)(-m-n)
2(m-n)²-m(m-n)
6(m+n)²-2(m+n)
(m-n)(m+n)+(m+n)²-2m²
m-n+2n^2/(m+n)
(m-2n/n-m)-(n/m-n)=
mn(m-n)-m(n-m)²2m(m-n)(2n-m)求过程
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分式加减法:化简:2m/m-n-n/n-m+m+2n/n-m
计算2m-n/n-m+m/m-n+n/n-m
计算:2m-n/n-m+m/m-n+n/n-m
(m+2n)-6(m+2n)(2m-n)+9(n-2m) 因式分解
因式分解:(2n-m)^2-6(2n-m)(m+n)+9(m+n)^2
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