SOLUTION: 7 divided by sqaure root 8 minus 8 divided by square root 9

Question 1064734: 7 divided by sqaure root 8 minus 8 divided by square root 9
Found 2 solutions by Fombitz, Boreal:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Need a common denominator,

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Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
7/(sqrt(8)=7/(2*2sqrt(2)) divided by
8/sqrt(9)=8/3
common denominator is 6 sqrt (2)
7*3-8(2 sqrt (2)=21-16 sqrt (2)
multiply denominator and numerator by sqrt (2) to rationalize
(21 sqrt (2)-32)/12
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