What is the solution of StartRoot 2 x + 4 EndRoot = 16?

Question

asked Feb 11, 2021 109k views

2 Answers

Foxie · Answer 1 · 2021-02-17T07:24:54+0000

We start with

√(2x+4)=16

Since both sides of the equality are positive, we can square them to get

2x+4=256

Subtract 4 from both sides and then divide both sides by 2:

$2x+4=256 \iff 2x=252\iff x=126$