Question

Rationalize the denominator of:
5
------------------------
(6 - 4 √ 7) - (8 - 5 √ 7)

Answer 1

What happens when you simplify the bottom?

Answer 2

also, multiplying the top and bottom by the conjugate is the general approach

Answer 3

i'm not sure what you mean by that

Answer 4

\[6-4\sqrt{7} - 8 + 5\sqrt{7}\]
How can you simplify this?

Answer 5

Simplification as much as possible is always a good first step