যদি a + b =2 , ab =1 , হয়, তবে a এবং b এর মান যথাক্রমে __
Created: 5 years ago |
Updated: 3 years ago
best des
দেয়া আছে, a + b = 2..... (1)
ab = 1......(2)
আমরা জানি,
(a - b)² = (a + b)² - 4ab
(a - b)² = > 2² - 4.1
(a - b)² = 4 - 4
∴a - b = 0 ..... (3)
(1) + (3) করে পাই, 2a = 2 = > a = 1
(1) - (3) করে পাই, 2b = 2 = > b = 1
Md Azizur Rahman
Founder of Satt
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