Answers

2014-06-30T21:26:19+08:00
(b - 6)sqrt(2) - (2b - 6)sqrt(2) = 36
(b-6 -2b+6)sqrt(2) = 36
-bsqrt(2) = 36
b = -36/sqrt(2)
b = -36sqrt(2)/2

b = -18sqrt(2)
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