Posted by Jay on .
(6 times square root of 3 + square root of 5)(square root of 3  4 times the squae root of 5)

Algebra 
MathGuru,
I'm assuming your problem is this:
(6√3 + √5)(√3  4√5)
Multiplying:
6√9  24√15 + √15  4√25
I'll let you take it from here to combine like terms and simplify.
I hope this helps and is what you were asking.