SOLUTION: {{{sqrt(2x+15)-x=6}}}

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Question 611636: sqrt%282x%2B15%29-x=6
Found 2 solutions by vleith, solver91311:
Answer by vleith(2825) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%282x%2B15%29-x=6
sqrt%282x%2B15%29+=+x+%2B+6 now square both sides
2x%2B15+=+x%5E2+%2B+12x+%2B+36 collect terms and solve for x
0+=+x%5E2+%2B10x+%2B+21
0+=+%28x%2B3%29%28x%2B7%29
so x is either -3 or -7
Check your answers

Answer by solver91311(17074) About Me  (Show Source):
You can put this solution on YOUR website!


Add to both sides.

Square both sides.

Collect like terms and then factor the resulting quadratic equation.

Verify both roots in the original equation. Discard any extraneous root(s).

John

My calculator said it, I believe it, that settles it
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