SOLUTION: multiply (2 sqrt 6 - 4 sqrt 5) (3 sqrt 6 + 6 sqrt 5) please help, Thank You

Algebra ->  Rational-functions -> SOLUTION: multiply (2 sqrt 6 - 4 sqrt 5) (3 sqrt 6 + 6 sqrt 5) please help, Thank You      Log On


   

Question 433867: multiply
(2 sqrt 6 - 4 sqrt 5) (3 sqrt 6 + 6 sqrt 5)
please help, Thank You
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
(2 sqrt 6 - 4 sqrt 5) (3 sqrt 6 + 6 sqrt 5)
------
Use FOIL:
F: 6*6 = 36
O: 12sqrt(30)
I: -12sqrt(30)
L: -24*5 = -120
---
Combine to get the answer:
Ans: -84
===================
Cheers,
Stan H.
==========