Question

9/16 - 25a^2b^2 factorise​

Answer 1

Answer:

25(a+b)^2 - 16(a-b)^2

=> [ 5(a+b)]^2 - [ 4(a-b)]^2

=> (5a +5b)^2 - (4a-4b)^2

=> (5a +5b - 4a +4b) ( 5a +5b +4a - 4b)

=> (a +9b) (9a+b)

Answer 2

Answer:

(3/4 + 5ab)(3/4 - 5ab)

Step-by-step explanation:

9/16 - 25a²b² = (3/4)² - (5ab)²

= (3/4 + 5ab)(3/4 - 5ab)