Answer:
a = 15
b = 7
c = 4
Explanation:
Given in the question an expression
![\sqrt[4]{15}^(7)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/i69613t948ahsezh2gqbj30l31suuc8u2g.png)
This expression can be written as

As we know that roots are most often written using a radical sign, like this,
But there is another way to represent the taking of a root.
You can use rational exponents instead of a radical. A rational exponent is an exponent that is a fraction. For example,
can be written as

Secondly two powers having same base can be multiply
