hannah2013
Simplify the square root of 32/5
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hannah2013
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Venomblast
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you can split the the square root of 32 into \[\sqrt{16} and \sqrt{2}\]. square root of 16 is 4. so you will have \[4\sqrt{2}/\sqrt{5}. now we have a radical on the denominator. we dont want that. you will need to rationalize.
Venomblast
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Venomblast
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square root of 4 is 2. so you will have\[4*2\sqrt{5}/5\]
hannah2013
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could help explain this one too?
Venomblast
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im sorry the answer is \[4\sqrt{10}/5\]
Venomblast
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you will need to rationalize. so you multiply the denominator and numerator by \[3+\sqrt{2}\]
Venomblast
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Venomblast
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Venomblast
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simplify it. and you will get \[3+\sqrt{2}\]
hannah2013
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\[\sqrt{x-2}-4=0\]
Venomblast
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add 4 to both side.then square both side
Venomblast
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u should get x-2=16. add 2 and x = 18
hannah2013
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thanks soo much for your help!!