a+b+17 এবং ab=60 হলে a-b=কত?
Solution
Correct Answer: Option A
দেওয়া আছে ,a+b=17
এবংab =60
অতএব ,(a-b)²=(a+b)²-4ab
=(17)²-4.60
=289-140
বা, (a-b)²=49
বা a-b=7
এবংab =60
অতএব ,(a-b)²=(a+b)²-4ab
=(17)²-4.60
=289-140
বা, (a-b)²=49
বা a-b=7
Practice More Questions on Our App!
Download our app for free and access thousands of MCQ questions with detailed solutions