SOLUTION: radical x-1=3

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Question 52873: radical x-1=3
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
++%28++sqrt%28x%29%29-1=3++%29
++%28++sqrt%28x%29%29-1%2B1=3%2B1++%29 [Isolate the radical]
++%28++sqrt%28x%29%29=4++%29 [Simplify]
++%28++%28sqrt%28x%29%29%29%5E2=%284%29%5E2++%29[Square each side to get rid of the radical]
x=16
.
Check by plugging (x-16) back into the original equation.
++%28++sqrt%2816%29%29-1=3++%29
4-1=3
3=3 [Checks out]