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OpenStudy (anonymous):
multiply (6 +sqrt2)(6-sqrt 2)
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OpenStudy (anonymous):
36-6sqrt2+6sqrt2-2=36-2=34
OpenStudy (anonymous):
6*6 =36 +sqrt2 * -sqrt2 = -2 6 * -sqrt2 cancels out 6 * + sqrt 2 so 36-2 = 34
OpenStudy (anonymous):
=36-2=34 ( using idendity of 2 square difference)
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