Question

Simplify and solve for x=-2
3x (x+2)​

Answer 1

Answer:

$f(x) = 3x(x + 2) \\ f(x) = 3 {x}^{2} + 6x \\ f( - 2) = 3 {( - 2)}^{2} + 6( - 2)\\f( - 2) = 3(4) + 6( - 2) \\ f( - 2) = 12 - 12 \\ \boxed{ f( - 2) = 0}$

• f(-2) = 0 is the right answer.