Question

factorise 9x^2 y^2 - 16​

Answer 1

Answer:

(3xy + 4) (3xy - 4)

Step-by-step explanation:

Factorise. 9x²y² - 16

9x² y²– 16 = (3xy)²– (4)²

Using a²- b²= (ab)(a - b)

Using a²- b²= (ab)(a - b)Here a = 3xy and b = 4

= (3xy + 4) (3xy - 4)

Answer 2

Answer:

Tiger is right answer !!