For this case we have that by definition of power properties we have to:
[tex](a ^ n) ^ m = a ^ {n * m}[/tex]
In addition, we know that:
[tex]4 ^ 4 = 4 * 4 * 4 * 4 = 256[/tex]
We have the following expression:
[tex](4 * h ^ 7 * k ^ 2) ^ 4 =\\4 ^ {1 * 4} * h ^ {7 * 4} * k ^ {2} 4} =\\4 ^ 4 * h ^ {28} k ^ {8} =\\256 * h ^ {28} * k ^ {8}[/tex]
Answer:
[tex]256 * h ^ {28} * k ^ {8}[/tex]
