Thread: rationalise

(5sqrt3) / (sqrt3 - sqrt2)

i got 15 - 5sqrt2

but is that right???

Hi there.

The answer is - obtained by multiplying the numerator and the denominator of the fraction by - the conjugate of

Originally Posted by deej813

(5sqrt3) / (sqrt3 - sqrt2)

i got 15 - 5sqrt2

but is that right???

using the property
(a+b)(a-b) = a^2 - b^2 for denominator
we get






I think you messed up in last step