Question

factorise (1 + 7x)² + (49x² - 1)​

Answer 1

Step-by-step explanation:

(1+7x)²+(7x-1)²

(1+7x)²+(7x+1)(7x-1)

(1+7x){(1+7x)+(7x-1)}

(1+7x)(1-7x)²

Answer 2

I hope it will help you