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GM Prep -- Approximation

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Source: — Problem Solving |
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by luvaduva » Wed Apr 23, 2008 7:42 pm
Expand the problem like you would the equation (x+y)^2

(sqrt(2))^2 + 2(sqrt(2)sqrt(5)) + (sqrt(5))^2

2 + 2(sqrt(10)) + 5

7 + 2(sqrt(10)) -----this is approximately 2*3 = 6

7+6 = 13
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by vinviper1 » Mon Apr 28, 2008 10:14 am
Thanks! The coming of numbers under teh sq root bar was not in my "tool chest" It is now. Thanks again.
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