Question

- Q3) Find the factorisation of 36x?y? - 1.​

Answer 1

Answer:

Can you tell What is?? in the Question?

Answer 2

Answer:

(22•32x2) • y2) - 1 STEP2:Trying to factor as a Difference of Squares:

 2.1      Factoring:  36x2y2-1 

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

         A2 - AB + BA - B2 =

         A2 - AB + AB - B2 =

         A2 - B2

Note :  AB = BA is the commutative property of multiplication.