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kenny6666 [7]
3 years ago
10

Given xy = 4 and x2 + y2 = a, which expression is equal to (x + y)2? a + 6 a + 8 a + 4

Mathematics
1 answer:
likoan [24]3 years ago
6 0

Answer:

a + 8

Step-by-step explanation:

Note that

(x + y)² = x² + 2xy + y²

           = x² + y² + 2xy

           = a + 2(4) = a + 8

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