SOLUTION: How do i solve Radical Sign x-3=9?

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Question 261574: How do i solve Radical Sign x-3=9?
Found 2 solutions by richwmiller, MathTherapy:
Answer by richwmiller(9135) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%28x-3%29=9
square both sides
x-3=81
x=78
or sqrt%28x%29-3=9
add 3 to both sides
sqrt(x)=12
square both sides
x=12

Answer by MathTherapy(1421) About Me  (Show Source):
You can put this solution on YOUR website!
How do i solve Radical Sign x-3=9?

sqrt%28x+-+3%29+=+9

%28sqrt%28x+-+3%29%29%5E2+=+9%5E2 ------- Squaring both sides of equation

x - 3 = 81

x = highlight_green%2884%29

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Check
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sqrt%28x+-+3%29+=+9

sqrt%2884+-+3%29+=+9

sqrt%2881%29+=+9 TRUE