Question

By Rationalising the denomonator show that

Answer 1

do you know that the conjugate of a-b is a+b?

Answer 2

or the conjugate of a+b is a-b?

Answer 3

so what is the conjugate of sqrt(2)+1?

Answer 4

\[\frac{1}{\sqrt{2}+1} \cdot \frac{\text{ conjugate of } (\sqrt{2}+1)}{\text{ conjugate of } (\sqrt{2}+1)}\]
This is how you will rationalize the denominator

Answer 5

Still dont get it

Answer 6

How do I type in text like that? Inside the equation? @freckles

Answer 7

A conjugate surd is where you invert the sign inside the expression.