Factorise each of the following 9 x square y square - 16 – InterviewSolution

1.

Factorise each of the following 9 x square y square - 16

Answer»

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

Step-by-step explanation:

9x^2y^2-16

(3xy)^2-4^2

By USING IDENTITY,

a^2-b^2=(a+b)(a-b)

(3xy)^2-4^2=(3xy+4)(3xy-4)

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