4m/√m-5

Answer 1

What about it?

furthermore, do you mean:
4m/√m - 5 , the way you typed it, or
4m/(√m - 5) , or
4m/√(m-5) ???

Answer 2

4m/(√m - 5)

Answer 3

ok, back to my first question , what about it?

are we estimating?
are we evaluating?
are we rationalizing the denominator?
are we painting it yellow?

Answer 4

rationalizing the denominator

Answer 5

4m/(√m - 5)
= 4m/(√m - 5)*(√m + 5)/(√m + 5)
= 4m((√m + 5)/(m-25)
or
(4m√m + 20m)/(m-25)