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sqrt(3-x)+5=9
 Mar 18, 2014
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sqrt(3-x)+5=9

OK, let's first subtract 5 from both sides

This gives SQRT(3-x) = 4

Now, to get rid of the root, square both sides

We have 3-x = 16

Subtract 3 from both sides

This gives -x = 13

Multiply through by -1

We get x = -13

You should check for yourself that this is correct by putting the answer back into the original problem to make sure it makes sense.

I'll leave that for you........
 Mar 18, 2014

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