If xy = 120 and x^2 + y^2 = 289, then x + y =

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xy = 120 , x^2 + y^2 = 289 , എങ്കിൽ x + y =

A24

B33

C21

D23

Answer:

D. 23

Read Explanation:

(x + y)² = x² + y² + 2xy (x + y)² = 289 + 2 × 120 =289 + 240 =529 (x + y) = √529 =23

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