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How do you simplify ( sqrt (2) + sqrt (3) ) ( sqrt (2) - sqrt (3) )?

1 Answer

Sahar Mulla ❤

Mar 23, 2018

$( sqrt (2) + sqrt (3) ) ( sqrt (2) - sqrt (3) )$

By the algebraic identity, $color(red)(a^2 - b^2 = (a+b)(a-b)$

$( sqrt (2) + sqrt (3) ) ( sqrt (2) - sqrt (3) ) = ( sqrt (2))^2 - (sqrt (3) )^2$

$=> 2 - 3 = -1$

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