Question

factorising 9a²b²—25​

Answer 1

Answer:

(3ab-5)(3ab+5)

Step-by-step explanation:

Im not sure if thats how u factorise it

Answer 2

Answer:

$= (3ab)^{2} - 5^{2}$

$= (3ab + 5)(3ab - 5)$

Step-by-step explanation:

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