已知3a-2b=2,求27的a次方÷9的b次方的值
人气:481 ℃ 时间:2020-02-20 16:47:18
解答
.27的a次方/9的b次方 =(3)的a次方/(3)的b次方 =3的3a次方/3的2b次方 =3的(3a-2b次方) =3 =9 同意我的答案请采纳,
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