Question

Remove the brackets and simplify
(7y - 1)(7y + 1)

Answer 1

Step-by-step explanation:

= 49Y^2 + 7Y - 7Y - 1

= 49Y^2 - 1

Answer 2

$we \: know \: that \: \\ a ^{2} - {b}^{2} = (a + b)(a - b) \\ given \\ (7y - 1)(7y + 1) \\ {(7y)}^{2} - 1 \\ 49 {y}^{2} - 1$