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August 26, 2016
Posted by **Anonymous** on Wednesday, March 27, 2013 at 1:03am.

How do I solve when the answer is -1?

- college algebra -
**Bosnian**, Wednesday, March 27, 2013 at 1:16amSquaring both sides

3 x + 7 = ( 3 x + 5 ) ^ 2

3 x + 7 = 9 x ^ 2 + 2 * 3 x * 5 + 5 ^ 2

3 x + 7 = 9 x ^ 2 + 30 x + 25

0 = 9 x ^ 2 + 30 x + 25 - 3 x - 7

9 x ^ 2 + 27 x + 18 = 0 Divide both sides by 9

x ^ 2 + 3 x + 2 = 0

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x ^ 2 + 3 x + 2 = 0

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