অজটিল করো : \(\frac{(76+84)^2-(76-84)^2}{76 \times 84}\) = ?

Question

Question

This question was previously asked in

UPSSSC PET Official Paper (Held on: 16 October 2022 Shift 2)

Answer 1

প্রদত্ত:

\(\dfrac{(76+84)^2-(76-84)^2}{76 \times 84}\)

ব্যবহৃত সূত্র:

(a + b)² - (a - b)² = 4ab

গণনা :

(a + b)2 - (a - b)2

⇒ a² + b² + 2ab - {a² + b² - 2ab}

⇒ 2ab + 2ab = 4ab

এখন , \(\dfrac{(76+84)^2-(76-84)^2}{76 \times 84}\)

⇒ \(\dfrac{4 × 76 × 84}{76 × 84}\) = 4

∴ উত্তর হল 4

Download Solution PDF