SOLUTION: If (x - y)² = 40 and x² + y² = 60, then xy=

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Question 417589: If (x - y)² = 40 and x² + y² = 60, then xy=
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

(x - y)² = 40
=> x² + y² -2xy = 40
=> 60 -2xy = 40
=> 2xy = 20
=> xy = 10

xy = 10