Question

(ii) If 5^x= 125^-1, find the value of: 3^x * 4^x

Answer 1

5^x=(1/125)

5^x={(1/5)³}

x=1/3. (cancelling 5 both the side)

therefore,3^x×4^x

=(3)^1/3×(4)^1/3

=(3×1/3)×(4×1/3)

=1×4/3

=4/3

=1 1/3