x + y = 5, xy = 6 হলে, x > y হলে, 2(x2 + y2) এর মান কত?

A 18

B 26

C 20

D 24

Solution

Correct Answer: Option B

2(x2 + y2)

={(x + y)2 - 2xy}

= 2{5² - 2.6}

= 2{25 - 12}

= 2 × 13 = 26

 

Practice More Questions on Our App!

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

Download Android App Login to Website

Related Topics