Question

Factorise: 169x² - 1​

Answer 1

Answer:

(13x + 1) (13x - 1)

Step-by-step explanation:

= 169x² - 1  

= (13x)² - (1)²

= (13x + 1) (13x - 1)  {By using algebra identity (a² - b²) = (a + b) (a - b)}

Answer 2

Step-by-step explanation:

• 169x^2 - 1
• By using algebra identity a^2 - b^2 = (a+b) (a-b)
• So, (13x)^2 - (1)^2
• Here, a= 13x and b= 1
• (13x+1)(13x -1)