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April 18, 2014

April 18, 2014

Posted by **Bart** on Thursday, October 18, 2012 at 4:07pm.

- Algebra 2 -
**Steve**, Thursday, October 18, 2012 at 4:10pmassuming you want to solve for r, square both sides to get

20-r = r^2

r^2 + r - 20 = 0

(r+5)(r-4) = 0

and it's all downhill from there.

Just remember: √25 = 5, not -5

- Algebra 2 -
**Bart**, Thursday, October 18, 2012 at 5:02pmThank you!

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