Question

Simplify the following expression:
(5a+3b)2-(5a-3b)2​

Answer 1

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Answer 2

Answer:

Correct question :-

➠ (5a + 3b)² - (5a - 3b)² - 60ab

Formula used :-

➭ a² - b² = (a + b) (a - b)

Answer :-

➠ (5a + 3b)² - (5a - 3b)² - 60ab

➻ {(5a + 3b) + (5a - 3b)} {(5a + 3b) - (5a - 3b)} - 60ab

➻ (5a + 3b + 5a - 3b) (5a + 3b - 5a + 3b) - 60ab

➻ (5a + 5a + 3b - 3b) (5a - 5a + 3b + 3b) - 60ab

➻ (10a) (6b) - 60ab

➻ 10a × 6b - 60ab

➻ 60ab - 60ab

➻ 0