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#1
Feb 5 2014 02:31pm


I got 4+8 square6

can someone check if this is right?

This post was edited by BxJozeph on Feb 5 2014 02:31pm
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#2
Feb 5 2014 02:40pm
Quote (BxJozeph @ Feb 5 2014 03:31pm)
http://i.imgur.com/vS4iQpZ.png

I got 4+8 square6

can someone check if this is right?


to rationalize fractions like this, you need to multiply by the conjugate of the denominator.
For this one, the conjugate would be sqrt(6) - 2

[8(sqrt(6) - 2)] / [(sqrt(6) + 2)(sqrt(6) - 2)] = [8sqrt(6) - 16] / [6 - 4] = 4sqrt(6) - 8
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#3
Feb 5 2014 02:41pm
Quote (TritonV8 @ 5 Feb 2014 16:40)
to rationalize fractions like this, you need to multiply by the conjugate of the denominator.
For this one, the conjugate would be sqrt(6) - 2

[8(sqrt(6) - 2)] / [(sqrt(6) + 2)(sqrt(6) - 2)] =  [8sqrt(6) - 16] / [6 - 4]  =  4sqrt(6) - 8


thanks
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