1.

Factories: x2 – 36

Answer»

We have, 

x2 – 36 

Which is, 

= (x)2 – (6)

By using the formula a2 – b2 = (a + b)(a – b) 

We get, 

x2 – 36 = (x)2 – (6)2 

= (x + 6)(x – 6)



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