SOLUTION: Please help solve by rationalizing the denominator: 5 - √y over 4 + √y

Algebra ->  Radicals -> SOLUTION: Please help solve by rationalizing the denominator: 5 - √y over 4 + √y      Log On


   



Question 338717: Please help solve by rationalizing the denominator:
5 - √y over 4 + √y

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Please help solve by rationalizing the denominator:
(5 - √y) over (4 + √y)
-----
Multiply numerator and denominator by (4-sqrt(y)) to get:
[(5-sqrt(y))(4-sqrt(y)]/[16-y]
---
= [20+y +sqrt(y)]/[16-y]
=============================
Cheers,
Stan H.