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Root2+ root3/ root5+root6 rationalized


User Skinneejoe
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1 Answer

7 votes

Answer:


2√(3)+3√(2)-√(10)-√(15)

Explanation:


$\frac{√(2) +√(3)} {√(5) +√(6)} $

In order to rationalize it, we multiply the denominator by its conjugate

This way we have a difference of squares


\boxed{(a+b)(a-b) = a^2-b^2}


$\frac{√(2) +√(3)} {√(5) +√(6)} \cdot \frac{√(5) -√(6)} {√(5) -√(6)} = ((√(2) +√(3))(√(5) -√(6)))/(5-6) $


$((√(2) +√(3))(√(5) -√(6)))/(5-6)=(\left(√(10)-2√(3)+√(15)-3√(2)\right))/(-1) $


-(√(10)-2√(3)+√(15)-3√(2)) = 2√(3)+3√(2)-√(10)-√(15)