2√3√5+2 √6

Soorry about not using latex

buh i need help again...:(

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- February 16th 2009, 12:57 AMsalamconjugate

__2√3__√5+2 √6

Soorry about not using latex

buh i need help again...:( - February 16th 2009, 01:02 AMJameson

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. - February 16th 2009, 01:18 AMsalam
could u please show me the working to it

so, express with rational denominator

thanks - February 16th 2009, 02:06 AMJameson