How do you rationalise the denominator of 8/(3-sqrt5)?
1 Answer
Apr 3, 2016
Multiply both numerator and denominator by
Explanation:
8/(3-sqrt(5))
=(8*(3+sqrt(5)))/((3-sqrt(5))(3+sqrt(5)))
=(24+8sqrt(5))/(3^2-(sqrt(5))^2)
=(24+8sqrt(5))/(9-5)
=(24+8sqrt(5))/4
=6+2sqrt(5)
The expression