Question

factorise 4a²+4ab+b²-9c²

Answer 1

Step-by-step explanation:

plz refer to the attachment above

Answer 2

Step-by-step explanation:

$4 {a}^{2} + 4ab + {b}^{2} - 9 {c}^{2} = {(2a + b)}^{2} - {(3c)}^{2} = (2a + b + 3c)(2a + b - 3c)$

here's your answer