1.

Factorize: 1 – 6x + 9x2

Answer»

Given, 

1 – 6x + 9x2 = 9x2 – 6x + 1 

By using the formula (a – b)2 = a2 – 2ab + b2 

We get, 

= (3x)2 – 2 × (3x) × 1 + (1)2 

= (3x – 1)2


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