If a - b = 0.9 and ab = 0.36; find : (i) a + b (ii) a² - b²

Question

KnowledgeBoat · Accepted Answer

(i) By formula, ⇒ (a + b)² = (a - b)² + 4ab ⇒ (a + b)² = (0.9)² + 4 × 0.36 ⇒ (a + b)² = 0.81 + 1.44 ⇒ (a + b)² = 2.25 ⇒ a + b = Hence, a + b = (ii) Solving, ⇒ a² - b² ⇒ (a - b)(a + b) ⇒ 0.9 × ⇒ Hence, a² - b² =

Mathematics

If a - b = 0.9 and ab = 0.36; find :
(i) a + b
(ii) a² - b²

Expansions

Related Questions

If a - b = 4 and a + b = 6; find :
(i) a² + b²
(ii) ab

Mathematics

If a - b = 0.9 and ab = 0.36; find :(i) a + b(ii) a2 - b2

Expansions

Related Questions

If a - b = 4 and a + b = 6; find :(i) a2 + b2(ii) ab

If a - b = 0.9 and ab = 0.36; find :
(i) a + b
(ii) a² - b²

If a - b = 4 and a + b = 6; find :
(i) a² + b²
(ii) ab