2m-{n+[4m-3(m+2n)]}-5n化简求值
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2m-{n+[4m-3(m+2n)]}-5n化简求值
2m-{n+[4m-3(m+2n)]}-5n化简求值
2m-{n+[4m-3(m+2n)]}-5n化简求值
2m-{n+[4m-3(m+2n)]}-5n
原式=2m-{n+[4m-3m-6n]}-5n
=2m-n-4m+3m+6n-5n
=2m-4m+3m-n+6n-5n
=m
7
=2m-[n+4m-3m-6n)-5n
=2m-n-4m+3m+6n-5n
=m(2-4+3)+n(-1+6-5)
=m
2m-{n+[4m-3(m+2n)]}-5n
=2m-n-[4m-3(m+2n)]-5n
=2m-n-4m+3(m+2n)-5n
=2m-4m+3m-n+6n-5n
=m
(3m-4n)(4n+3m)-(2m-n)(2m+n)
[(m-n)^2*(m-n)^3]^2/(m-n)^4
[(m-n)^2*(m-n)^3]^2/(m-n)^4
4m(m-n)^2+4n(n-m)^3
(m-n)2(n-m)3(n-m)4化简
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m/n=5/3,求(m/m+n)+(m/m+n)-(n^2/m^2-n^2)
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因式分解:(m+n)^3+2m(m+n)^2+m^2(m+n)
(m+2n)(2m+n)-(3m-n)(m+2n)
(m-2n)(2n+m)-(-3m-4n)(4n-3m)=
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(4(m-n)^3)/((n-m)^2)