If i have : [attached image]
how do i obtain the other result?
Is it by rationalising denominator?
i thought that when you rationalise the denominator by multiplying it by
sqrt.k the numerator becomes: k.sqrt.k ?
Bit of confusion.
(The full question involves differentiating, however, my algebra skills have let me down :|)
NOTE: SORRY, that should be a 'k' inside the root sign, not 'x'.