x-y = 2 এবং xy = 24 হলে, x এর ধনাত্মক মানটি-

A 3

B 4

C 5

D 6

Correct Answer: Option D

x-y = 2 ------- (1)

(x+y)2 = (x - y)2 + 4xy = 22 + 4*24 = 4 + 96 = 100

x + y =10 ----- (2)

(1) + (2)

2x = 12

x = 6