Question

What is the solution of sqrt 2x + 4 = 16 ? x = 6 x = 72 x = 126 no solution

Answer 1

Answer:  Third option is correct.

Step-by-step explanation:

Since we have given that

$\sqrt{2x+4}=16$

We need to find the value of 'x'.

First we squaring the both sides:

$(\sqrt{2x+4})^2=16^2\\\\2x+4=256\\\\2x=256-4\\\\2x=252\\\\x=\dfrac{252}{2}\\\\x=126$

Hence, the value of x is 126.

Therefore, Third option is correct.