Question

If x+y=9 and xy=20 then find x^2+y^2​

Answer 1

Answer: 41

Step-by-step explanation:

Given,

x+y=9 , xy=20

We know that ,

(x+y)² = x² + y² + 2xy

(9)² = x² + y² + 2 x 20

81 = x² + y² + 40

81 - 40 = x² + y²

41 = x² + y²

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Answer 2

Step-by-step explanation:

Refer the attachment.........