যদি x + 2y = 4 এবং xy = 2 হয় তবে x = কত?
Created: 11 months ago |
Updated: 10 months ago
best des
প্রস্নঃ যদি x + 2y = 4 এবং xy = 2 হয়, তবে x = কত?
এখানে, x + 2y = 4 - - - - - - - - - - - - - - - - - - - - - (১)
এবং, xy = 2 - - - - - - - - - - - - - - - - - - - (২)
বা, y = 2/x
তাহলে, (১) = > x + 2*(2/x) = 4
বা, x + x = 4
বা, 2x = 4
x = 2
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