Subject
Quantitative Aptitude
Topic
General Formula
a+b=9m এবং ab=18m2হলে a-b=?
a+b=9m এবং ab=18m2হলে a-b=?
ক)
+/-3mখ)
-3mগ)
6mঘ)
8mExplanation
a+b=9m এবং ab=18m2 (a+b)2 = 92 => (a-b)2 + 4ab = 81 =>(a-b)2 + 4.18 =81 => (a-b)2 =9 => a-b =+-3Related questions
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