Question

Factorise 4a2 - 9b2 - 2a - 3b​

Answer 1

Step-by-step explanation:

$4 {a}^{2} - 9 {b}^{2} - 2a - 3b$

$4 {a}^{2} - 2a - 9 {b}^{2} - 3b$

$2a(2a - 1) - 3b(3b - 1)$

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Answer 2

Answer:

Question :-

➠ 4a² - 9b² - 2a - 3b

➪ a² - b²

➭ (a + b) (a - b)

➠ 4a² - 9b² - 2a - 3b

➻ (2a)² - (3b)² - (2a + 3b)

➻ (2a + 3b) (2a - 3b) - (2a + 3b)

➻ (2a + 3b) {(2a - 3b) - 1} [Taking (2a + 3b) common]

➻ (2a + 3b) (2a - 3b - 1)

∴ The value of 4a² - 9b² - 2a - 3b is (2a + 3b) (2a - 3b - 1)