if 9 X square + Y square is equal to 397 xy is equal to 38 find the value of 3 X + Y
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Answer:
(3x+y)^2=9x^2+y^2+6xy
(3x+y)^2=397+6*38
(3x+y)^2=625
3x+y=+-(root625)
3x+y=+-25
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8
Answer:+-25
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