How do i do an exponent with a letter variable in it?

Here is the easy way to memorise the truth value of p ^ q.

p ^ q will be true only if p and q both are true. Otherwise, false.

Given p = x is prime and q = x is even. If we replace x by 2 then we would get

p = 2 is prime

q = 2 is even

The statement for p and q both are true because 2 only has two factors which are only 1 and 2 itself. 2 is also considered an even number (2,4,6,8,...)

Since p = true and q = true then p and q = p^q = true and true = T/True

The second choice. p^q is True