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July 23, 2014

July 23, 2014

Posted by **Teena** on Friday, May 23, 2008 at 11:20pm.

220 + 5 80 - 7 5

Can someone please help me

- algebra -
**drwls**, Saturday, May 24, 2008 at 2:56amIs your symbol supposed to represent the square root of what follows?

If so, use the fact that

sqrt 20 = 2 sqrt 5, and

sqrt 80 = 4 sqrt 5.

Then collect terms. All will contain a sqrt 5 factor.

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