把分母有理化(3+√5)/(3√3+√15)(m^n-mn^)/(m√n+n√m)这两题分母有理化

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把分母有理化(3+√5)/(3√3+√15)(m^n-mn^)/(m√n+n√m)这两题分母有理化把分母有理化(3+√5)/(3√3+√15)(m^n-mn^)/(m√n+n√m)这两题分母有理化把分

把分母有理化(3+√5)/(3√3+√15)(m^n-mn^)/(m√n+n√m)这两题分母有理化
把分母有理化
(3+√5)/(3√3+√15)
(m^n-mn^)/(m√n+n√m)
这两题分母有理化

把分母有理化(3+√5)/(3√3+√15)(m^n-mn^)/(m√n+n√m)这两题分母有理化
(3+√5)/(3√3+√15)
=(3+√5)((3√3-√15)/[(3√3+√15)(3√3-√15)]
=(9√3-3√15+3√15-5√3)/(27-15)
=4√3 /12
=√3 /3
(m^2n-mn^2)/(m√n+n√m)
=mn(m-n)(m√n-n√m)/[(m√n+n√m)(m√n-n√m)
=mn(m-n)(m√n-n√m)/(m^2n-mn^2)
=mn(m-n)(m√n-n√m)/mn(m-n)
=m√n-n√m
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