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October 20, 2014

October 20, 2014

Posted by **Carlos** on Saturday, July 2, 2011 at 4:11pm.

- Algebra II -
**Damon**, Saturday, July 2, 2011 at 5:08pm(5+x)(6+x) = 3*30 = 90

30 + 11 x + x^2 = 90

x^2 + 11 x - 60 = 0

(x+15)(x-4) = 0

x = 4

check

9*10 = 3*30 yes

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