Question

Factorise 4a square minus 9b square +4a+1

Answer 1

see the attachment ♡♡♡☆☆☆☆☆♡♡☆☆

Answer 2

Answer:

${4a}^{2} - {9b}^{2} + 4a + 1 \\ = ( {4a}^{2} + 4a + 1) - {9b}^{2} \\ = {(2a + 1)}^{2} - {(3b)}^{2} \\ = (2a + 1 + 3b)(2a + 1 - 3b) \\ = (2a + 3b + 1)(2a - 3b + 1)$