Factories: 4a2 – 9 – InterviewSolution

1.	Factories: 4a2 – 9
Answer» We have, 4a² – 9 = (2a)² – (3)² By using the formula a² – b² = (a + b)(a – b) We get, 4a² – 9 = (2a)² – (3)² = (2a + 3)(2a – 3)

Factories: 4a2 – 9

Answer»

We have,

4a² – 9

= (2a)² – (3)²

By using the formula a² – b² = (a + b)(a – b)

We get,

4a² – 9 = (2a)² – (3)²

= (2a + 3)(2a – 3)