x-y = 2 এবং xy = 3 হলে, x + y এর মান কত?

A

B - ৪

C ১৬

D ±৪

Solution

Correct Answer: Option D

দেওয়া আছে, x - y = 2, xy = 3
∴ x + y = √{(x - y)2 + 4xy}
= √{(2)2 + 4.3}
= √16
= ±4

Practice More Questions on Our App!

Download our app for free and access thousands of MCQ questions with detailed solutions