Use the power (power is in exponent, not as in power-up) rule.
I believe that is the proper name.
(x + 4)^4 = (x + 5 )^ 52 -huh. LaTex doesn't do exponents that big.
.... or this flipped. It's the same thing I believe.
I believe that is what they are looking for.
I would want a second opinion if I were you.