Posted by Hannah on Monday, September 6, 2010 at 7:20pm.
Simplify each expression.
1)(sqrt7 + 5)(sqrt7 6)
My answer is sqrt 7  30
Am I correct?

Math(Please check answer)  Reiny, Monday, September 6, 2010 at 7:29pm
no, you forgot the middle terms
(√7 + 5)(√7  6)
= 7 + 5√7  6√7  30 , using FOIL
= 23  √7