skittlepower4587 skittlepower4587 27-05-2023 Mathematics contestada Evaluate the function f(x)=x² + 2x+9 at the given values of the independent variable and simplify. a. f(4) b. f(x+1) c. f(-x) a. 14)=(Simplify your answer.) b. ((x+1)-(Simplify your answer.) c. 1(-x)=(Simplify your answer.)