Question

Factorise:
9a^2 - 25​

Answer 1

(3a+5) (3a-5). This is the answer to your question

Answer 2

Answer:

(3a+5) (3a-5)

Step-by-step explanation:

a²-b²=(a+b)(a-b)

9a²=(3a)²

25=5²

9a^2 - 25

=(3a+5) (3a-5)