Math, asked by anu2pragyaPsonubalj, 1 year ago

Factorise: 4a 2 -9b 2 - 2a-3b

Answers

Answered by ritika2000sonia
7
4a²-2a-9b²-3b
=2a(a-1)-3b(3b-1)
=(2a-3b)(a-1)(3b-1)

3b-1=0
b=1/3
a-1=0
a=1
Answered by misscutie94
24

Answer:

Question :-

➠ 4a² - 9b² - 2a - 3b

Formula used :-

➪ a² - b²

➙ (a + b) (a - b)

Answer :-

➠ 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)

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