What is the solution of square root of 2 x plus 4 end root is equal to 16 ?

Square both sides of √(2x + 4) = 16 to get 2x + 4 = 256. Subtract 4 and divide by 2: x = 126. Checking, √(2(126) + 4) = √256 = 16, so the solution is x = 126.

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