we know, (a^m)^n = a^mn
1. {(-3/7)^2}^5
= (-3/7)^10
2. [{(6/7)^2}^-4]^5
= (6/7)^-40
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we know, (a^m)^n = a^mn
1. {(-3/7)^2}^5
= (-3/7)^10
2. [{(6/7)^2}^-4]^5
= (6/7)^-40