X+y=3,x^2+y^2=29 find xy – InterviewSolution

1.	X+y=3,x^2+y^2=29 find xy
Answer» -STEP EXPLANATION:(x+y)²= x²+y²+2xy3²= 29+2xy9=29+2xy9-29= 2xy-20=2xyxy= -20/2xy= -10

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