Answer:
a² + b² + c² - 2ab + 2bc - 2ac
Step-by-step explanation:
[tex]b=\frac{c+2}{a}\:[/tex]
[tex]ab-c=2\\\\\add(c)\\\\ab=2+c\\\\divide(a)\\[/tex]
[tex]\frac{c+2}{a}\:[/tex]
