Question

solve the surds 9th standard​

Answer 1

Answer:

Given :-

➪ 2√6 - √5/3√5 - 2√6

Solution :-

➪ 2√6 - √5/3√5 - 2√6

➭ 2√6 - √5/3√5 - 2√6 × 3√5 + 2√6/3√5 + 2√6

➭ (2√6 -√5) (3√5 + 2√6)/(3√5 - 2√6) (3√6 + 2√6)

➭ 2√6(3√5 + 2√6) - √5(3√5 + 2√6)/(3√5)² - (2√6)²

➭ 6√30 + 4 ×6 - 3 × 5 - 2√30/9 ×5 - 4 × 6

➭ 6√30 + 24 - 15 - 2√30/45 - 24

➭ 6√30 - 2√30 + 24 - 15/21

➭ 4 √30 + 9/21

➭ 9 + 4√30/21

Formula used :-

➪ a² - b²

➭ (a + b) (a - b)