SOLUTION: How would I multiply this expression (√a+√2b)(√a-√2b)? This is what I have 2ba-2b^2.

Algebra ->  Equations -> SOLUTION: How would I multiply this expression (√a+√2b)(√a-√2b)? This is what I have 2ba-2b^2.       Log On


   

Question 945648: How would I multiply this expression (√a+√2b)(√a-√2b)? This is what I have 2ba-2b^2.
Found 2 solutions by Alan3354, MathTherapy:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Is it sqrt%282%29a ?
Or sqrt%282a%29 ?
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Don't use the radicals.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

How would I multiply this expression (√a+√2b)(√a-√2b)? This is what I have 2ba-2b^2. 
%28sqrt%28a%29+%2B+sqrt%282b%29%29%28sqrt%28a%29+-+sqrt%282b%29%29

a+-+sqrt%284b%5E2%29 ------- FOILing binomials

highlight_green%28a+-+2b%29        

You can do the check!! 

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