(1÷a的负一次方)(1÷b的负一次方)(ab)2 若(x的m次方÷x的2n次方)3÷x的2m-n与2x3是同类项,且m+5nm2-25n的值.本人没钱了,
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![(1÷a的负一次方)(1÷b的负一次方)(ab)2 若(x的m次方÷x的2n次方)3÷x的2m-n与2x3是同类项,且m+5nm2-25n的值.本人没钱了,](/uploads/image/z/3756041-17-1.jpg?t=%281%C3%B7a%E7%9A%84%E8%B4%9F%E4%B8%80%E6%AC%A1%E6%96%B9%29%EF%BC%881%C3%B7b%E7%9A%84%E8%B4%9F%E4%B8%80%E6%AC%A1%E6%96%B9%EF%BC%89%EF%BC%88ab%EF%BC%892+%E8%8B%A5%EF%BC%88x%E7%9A%84m%E6%AC%A1%E6%96%B9%C3%B7x%E7%9A%842n%E6%AC%A1%E6%96%B9%EF%BC%893%C3%B7x%E7%9A%842m%EF%BC%8Dn%E4%B8%8E2x3%E6%98%AF%E5%90%8C%E7%B1%BB%E9%A1%B9%2C%E4%B8%94m%2B5nm2%EF%BC%8D25n%E7%9A%84%E5%80%BC.%E6%9C%AC%E4%BA%BA%E6%B2%A1%E9%92%B1%E4%BA%86%2C)
(1÷a的负一次方)(1÷b的负一次方)(ab)2 若(x的m次方÷x的2n次方)3÷x的2m-n与2x3是同类项,且m+5nm2-25n的值.本人没钱了,
(1÷a的负一次方)(1÷b的负一次方)(ab)2 若(x的m次方÷x的2n次方)3÷x的2m-n与2x3是同类项,且m+5n
m2-25n的值.
本人没钱了,
(1÷a的负一次方)(1÷b的负一次方)(ab)2 若(x的m次方÷x的2n次方)3÷x的2m-n与2x3是同类项,且m+5nm2-25n的值.本人没钱了,
1.(1÷a的负一次方)(1÷b的负一次方)(ab)
=ab(ab)=a^2*b^2.
2.[x^m÷x^(2n)]^3÷x^(2m-n)
=[x^(m-2n)]^3÷x^(2m-n)
=x^[3(m-2n)-(2m-n)]
=x^(m-5n),
与2x3是同类项,
∴m-5n=3.
m+5n=?
解得m=?,n=?……