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05 Feb 2010, 19:21
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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100% (01:52) correct
0%
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wrong
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Could not figure out an efficient way to do this one. Please help!
OA:
OA:
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05 Feb 2010, 19:24
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trzaskm
4 equations so there are
4!/2!2! = 6 ways
Want to create an x^2-y^2 equation
looking at the equation only one answer will yield the above formula
05 Feb 2010, 19:59
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total possibilities = 4c2 = 6
to be of x^2 - (by)^2 = (x+by) * (x-by) .. only one combination is of htis kind
1/6
E
to be of x^2 - (by)^2 = (x+by) * (x-by) .. only one combination is of htis kind
1/6
E
