If x + y = 3, x² + y² = 5 then xy = – InterviewSolution

1.

If x + y = 3, x² + y² = 5 then xy =

Answer»

xy=2

Step-by-step EXPLANATION:

x+y=3

(x+y)^2=3^2

x^2+y^2+2xy=9

5+2xy=9

2xy=4

xy=2

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