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October 31, 2014

October 31, 2014

Posted by **jane** on Thursday, November 10, 2011 at 10:47am.

Solve and simplify, use comma to separate answers:

sqrt:9x+55=x+5

- algebra -
**Steve**, Thursday, November 10, 2011 at 11:12am√(9x+55) = x+5

9x+55 = (x+5)^2 = x^2 + 10x + 25

x^2 + x - 30 = 0

(x+6)(x-5) = 0

x = -6,5

Check:

√(-54+55) = √1 = -6+5 = 1

√(45+55) = √100 = 5+5 = 10

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