Math radicals homework

1. The problem statement, all variables and given/known data

(square root of 3 + square root of 5)(square root of 3-square root of6)

2. Relevant equations

3. The attempt at a solution
Im confused on what to multiply what with.
Re: Radicals

How would you multiply (x + y)(x - z) out?

The Bob
Re: Radicals

I don't know but that's what I've gotten :
[tex] (\sqrt{3}+\sqrt{5})(\sqrt{3}-\sqrt{6})=\sqrt{3}(\sqrt{3}-\sqrt{6})+\sqrt{5}(\sqrt{3}-\sqrt{6})=\\
Re: Radicals

Well that is a way to do it but you've not produced an 'accurate' answer by using surds. As this has been posted, Stratosphere what would you have done?

The Bob

The Physics Forums Way

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving