Question

Simplify the expression:
(5y^7)^-3

Answer 1

`(a^(m) )^(n) =a^(m*n)`

`a^(-n) = (1)/( a^(n) )`



`(5y^(7) )^(-3) =5y^(7*(-3)) = (1)/((5y)^(7*3) ) = (1)/(125y^(21) )`