alg.2

Solve for x...

square root x+16=2+square root x+4.


I tried doing this problem and got 7/3. and i know that is really wrong. can anyone please show me the steps to doing this problem. thanks:)

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asked by Miley
  1. √(x+16) = 2 + √(x+4)
    square both sides

    x+16 = 4 + 4√(x+4) + x+4
    8 = 4√(x+4)
    2 = √(x+4) square again
    4 = x+4
    x = 0

    test it in the original equation.

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    posted by Reiny

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