Trig
posted by Jay C .
3square root 2/ 1+square root 2

This is not trig.
(3  sqrt2)/(1 + sqrt2)
= (3sqrt2)(1sqrt2)/[(1sqrt2)(1+sqrt2)]
= [3  4sqrt2 +2]/(12)
= (5 4sqrt2)/1
= 4sqrt2 5
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