হলে 8ab এর মান কত?
Created: 4 years ago |
Updated: 3 years ago
best des
8ab(a² + b²) = 4ab.2(a² + b²)
= {(a² + b²) - (a² - b²)}{(a² + b²) + (a² - b²)}
= {(✓7)² - (✓5)²}{(✓7)² + (✓5)²}
= (7 - 5)(7 + 5)
= 2×12
= 24
Md Azizur Rahman
Founder of Satt
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