Answer:
It is 3c² + 9c + 14
Step-by-step explanation:
[tex]3c(5 + c) - 2(3c - 7)[/tex]
open the brackets:
[tex] = (15c + 3 {c}^{2} ) - (6c - 14) \\ = (15c + {3c}^{2} ) - 6c + 14[/tex]
express in quadratic equation:
[tex]3 {c}^{2} + 9c + 14[/tex]
