Question:
xy = 120 , x^2 + y^2 = 289 , എങ്കിൽ x + y =
A24
B33
C21
D23
Answer:
D. 23
Explanation:
(x + y)² = x² + y² + 2xy (x + y)² = 289 + 2 × 120 =289 + 240 =529 (x + y) = √529 =23
Question:
A24
B33
C21
D23
Answer:
(x + y)² = x² + y² + 2xy (x + y)² = 289 + 2 × 120 =289 + 240 =529 (x + y) = √529 =23