Question

PLZZZZZZZZZZZZZZZZZZZZZZZZZ HELPPPPPPPPPP

Answer 1

Neither of them are correct.

This is what Annabelle is doing:

$(4^2+7^5)(4^3+7^2)$

This is what Navelle is doing:

$(4^27^2)(4^37^2) \implies 4^{2*3}7^{2*5}$

Navelle is multiplying the exponents. You only do that when you raise an exponent to a power under parenthesis. Annabelle mistook multiplication for addition, and she got her answer as a result. This is the correct way to do it:

$4^27^5*4^37^2=4^{2+3}*7^{2+5}=4^5*7^7$