Answer:
[tex]a(2ab - b - 1)[/tex]
Step-by-step explanation:
1) Find the Greatest Common Factor (GCF).
[tex]gcf = a[/tex]
2) Factor out the GCF. ( write the GCF first. then, in parentheses, divide each term by the GCF).
[tex]a( \frac{ {2a}^{2}b }{a} + \frac{ - ab}{a} - \frac{a}{a} [/tex]
3) Simplify each term in parentheses.
[tex]a(2ab - b - 1)[/tex]
