Question 192: how do you simplify 3square root 18 - square root 50 +2 square root 72? can you please get back to me
Found 2 solutions by ichudov, AngelKapoor:
Answer by ichudov(507)   (Show Source):
You can put this solution on YOUR website! note that 18=9*2, 50 = 25*2, 72 = 36*2. 9, 25 and 36 are squares of 3, 5 and 6 can be taken out of squar root as 3, 5, and 6 respectively. So, you get 
Answer by AngelKapoor(1)  (Show Source):
You can put this solution on YOUR website! note that 18=9*2, 50 = 25*2, 72 = 36*2. 9, 25 and 36 are squares of 3, 5 and 6 can be taken out of squar root as 3, 5, and 6 respectively. So, you get
= 3.√18 - √50 + 3√72 = 3.3√2 - 5√2 + 6.2√2 = √2( 9 - 5 + 12)
= 16√2
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