Answer
x=3
Work Step by Step
You have the expression ($5^{5}$$)^{x}$=$5^{15}$.You have to find the value of x:
$5^{5x}$=$5^{15}$ -multiply the exponents because you are raising a power to a power.
5x=15 -divide both sides by 5-
x=3
The expression would be ($5^{5}$$)^{3}$=$5^{15}$