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January 27, 2015

January 27, 2015

Posted by **Hannah** on Sunday, July 4, 2010 at 5:18pm.

2sqrt50 - sqrt8

I am confused because of the 2 before the sqrt50

- math -
**Damon**, Sunday, July 4, 2010 at 5:25pm2 sqrt 50 = 2 sqrt (5*5*2) = 10 sqrt 2

sqrt 8 - sqrt (2*2*2) = 2 sqrt 2

10 sqrt 2 - 2 sqrt 2 =

- math -
**Hannah**, Sunday, July 4, 2010 at 5:27pmis 8sqrt2 correct?

- math -
**Dereck**, Sunday, July 4, 2010 at 5:28pmThe 2 before the sqrt50 just means 2 times sqrt50

Since

sqrt50=5sqrt2

and

sqrt8=2sqrt2

2*5sqrt2-2sqrt2

=10sqrt2-2sqrt2

=8sqrt2

- math -
**Damon**, Sunday, July 4, 2010 at 5:30pmYes, both right :)

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