Answer:
[tex]7a( - a + 3)[/tex]
Step-by-step explanation:
How to factor:
Factoring identities:
[tex]a)(x + y {)}^{2} \\ = (x + y)(x + y) \\ = {x}^{2} + 2xy + {y}^{2} \\ b)(x - y {)}^{2} \\ = (x - y)(x - y) \\ = {x}^{2} - 2xy + {y}^{2} \\ c) {x}^{2} - {y}^{2} \\ = (x + y)(x - y)[/tex]
Hope this will help :D
Brainliest would be appreciated
