化简m^2-2mn/m^2-4mn+4n^2
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化简m^2-2mn/m^2-4mn+4n^2化简m^2-2mn/m^2-4mn+4n^2化简m^2-2mn/m^2-4mn+4n^2=m(m-2n)/(m-2n)^2=m/(m-2n)你的题目应该是:
化简m^2-2mn/m^2-4mn+4n^2
化简m^2-2mn/m^2-4mn+4n^2
化简m^2-2mn/m^2-4mn+4n^2
=m(m-2n)/(m-2n)^2
=m/(m-2n)
你的题目应该是:(m^2-2mn)/(m^2-4mn+4n^2)吧!
原式=(m(m-2n))/(m^2-4mn+(2n)^2)
=(m(m-2n))/((m-2n)^2)
=m/(m-2n)
应该学了平方和(差)公式了吧!其实像这种问题自己努力想想是比较简单的!
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