SOLUTION: EXPAND AND SIMPLIFY 
a) (3sqrt m -7sqrt n)(3sqrtm+7sqrt n)
b) (8sqrt x - 5sqrt x/3) ^2 
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Question 1018438:  EXPAND AND SIMPLIFY 
a) (3sqrt m -7sqrt n)(3sqrtm+7sqrt n)
b) (8sqrt x - 5sqrt x/3) ^2  
Answer by CubeyThePenguin(3113)   (Show Source): You can put this solution on YOUR website!
 a) difference of squares => 9m - 49n
b) 64x + 25x/3 - 215x/9 =  
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