SOLUTION: Please help, I'm stuck on this product and can't seem to figure out the answer.
directions: to simplify the following
4sqrt 9/8 - 4sqrt 2/9
the book says that the answer i
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-> SOLUTION: Please help, I'm stuck on this product and can't seem to figure out the answer.
directions: to simplify the following
4sqrt 9/8 - 4sqrt 2/9
the book says that the answer i
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Question 230296: Please help, I'm stuck on this product and can't seem to figure out the answer.
directions: to simplify the following
4sqrt 9/8 - 4sqrt 2/9
the book says that the answer is 1/6 4sqrt 18. I have came close to this answer yet.
any help would be helpful please.
thanks, mike Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 4sqrt 9/8 - 4sqrt 2/9
the book says that the answer is 1/6 4sqrt 18
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4*(3/2)sqrt(1/2) - (4/3)sqrt(2)
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(6/2)sqrt(2) - (4/3)sqrt(2)
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(3 - (4/3))sqrt(2)
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(5/3)sqrt(2)
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Comment: This is not the answer your book has.
Why?
4sqrt 9/8 can be interpreted in several ways
I have interpreted as 4sqrt[(3^2/2^2*2) = 4(3/2)sqrt(1/2 = 6sqrt(2)/2 = 3sqrt(2)
But that does not result in the answer you have.
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What to do?
Use parentheses so the reader can tell exactly what the problem is:
Is it 4sqrt(9)/8 or is it 4sqrt(9/8)?
Is it 2 sqrt(9)/2 or is ti 2 sqrt(9/2)?
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Cheers,
Stan H.
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