Question

factorise x²y²-0.81 with steps​

Answer 1

Answer:

(3,3)(3,-3)(-3,3)(-3,-3)

Step-by-step explanation:

x^2y^2 - 0.81

= (xy)^2 - 0.81

= (xy + 0.9)(xy-9)

xy = -0.9

or

xy = 0.9

Answer 2

Step-by-step explanation:

(3,3)(3,-3)(-3,3)(-3,-3)

x^2y^2 - 0.81

= (xy)^2 - 0.81

= (xy + 0.9)(xy-9)

xy = -0.9

or

xy = 0.9