2√3√5+2 √6

Soorry about not using latex

buh i need help again...:(

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- Feb 15th 2009, 11:57 PMsalamconjugate

__2√3__√5+2 √6

Soorry about not using latex

buh i need help again...:( - Feb 16th 2009, 12:02 AMJameson
$\displaystyle \frac{2\sqrt{3}}{\sqrt{5}+2\sqrt{6}}$

The conjugate of a+b is simply a-b. What's nice about this product is you will get a^2-b^2, which eliminates square roots. Multiply the numerator and denominator by the conjugate of the denominator. - Feb 16th 2009, 12:18 AMsalam
could u please show me the working to it

so, express with rational denominator

thanks - Feb 16th 2009, 01:06 AMJameson