what is the solution of $sqrt{2x + 4}=16$?\n$x = 6$\n$x = 72$\n$x = 126$\nno solution

Answer:

C. $x = 126$

Explanation:

Step1: Square both sides

$(\sqrt{2x + 4})^2=16^2$ $2x + 4=256$

Step2: Isolate the term with $x$

$2x=256 - 4$ $2x=252$

Step3: Solve for $x$

$x=\frac{252}{2}$ $x = 126$