Question

If x + y = 3, x2 + y2 = 5 then, the value of xy is​

Answer 1

Answer:

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Answer 2

Answer:

x + y = 7

Step-by-step explanation:

since ,

xy = 12 and , x² + y² = 25

we know that

(x + y)² = x² + y² + 2xy

=> (x + y)² = 25 + 2 × 12

=> (x + y)² = 25 + 24

=> (x + y)² = 49

=> x + y = √49

=> x + y = 7