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UNO [17]
3 years ago
12

If 3x2+3y2=42 and xy= -15, find the value of (x-y)2

Mathematics
2 answers:
Agata [3.3K]3 years ago
4 0
Was the other answer right?
salantis [7]3 years ago
3 0

Answer:

44

Step-by-step explanation:

x^2 + y^2 = 14

(x-y)^2  x^2 + y^2 - 2xy = 14 -2 * (-15) = 44

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