Question

FACTORISE USING THE FORMULA
$a2 - b2 = (a + b)(a - b)$
PLS HELP​

Answer 1

Answer:

$(5x + y)(5x - y - 1)$

Step-by-step explanation:

$25 {x}^{2} - {y}^{2} + 5x + y \\ = > (5x + y)(5x - y) + (5x + y) \\ = > (5x + y)(5x - y - 1)$