Discuss Forum

1. If the square of the sum of two numbers is equal to 4 times of their product. Then the ratio of these numbers is:

  • A. 2:1
  • B. 2:1
  • C. 2:1
  • D. 2:1

Answer: Option C

Explanation:

 ধরি, একটি সংখ্যা x এবং অপরটি y প্রশ্নমতে, x+y2=4xy⇒x2+2xy+y2-4xy=0⇒x-y2=0⇒x-y=0⇒x=y⇒xy=11∴x:y=1:1

Post your comments here:

Name:
Mobile:
Email:(Optional)

» Your comments will be displayed only after manual approval.