Subject
Bank Exam
Topic
Uttara Bank Ltd. 2011 Asst. Officer (Cash)
For (a+b) =7 and ab= 12, (a-b) =?
For (a+b) =7 and ab= 12, (a-b) =?
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1খ)
2গ)
3ঘ)
4Explanation
(a-b) 2 =(a+b) 2 -4ab = 7 2 -4.12=49-48=1 then, a-b=√1=1Related questions
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