the correct answer of
[tex]4{x}^{2} + 4x[/tex]
if x=4 is 272.
to solve the equation if x equals 4, you must substitute the x of the 4.
[tex]4( {4}^{3} ) + 4(4)[/tex]
then solve by order of operations.
solve what is inside the parentheses first
[tex]4(64) + 4(4)[/tex]
then do the multiplication of the factors
[tex]256 + 16[/tex]
then the final step, adding, to get the solution of 272
