যদি x+y=১৭, এবং xy = ৬০ হয় তবে x-y এর মান কত?
Created: 4 years ago |
Updated: 1 year ago
best des
(x - y)2 = (x + y)2 - 4 xy (x + y, এবং xy এর মান দেয়া আছে তাই এই সূত্র )
বা, (x - y)2 = 172 - 4.60
বা, (x - y)2 = 289 - 240
বা, (x - y)2 = 49
বা, (x - y) = √ 49
বা, x - y = ± 7
Md Azizur Rahman
Founder of Satt
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