For the function shown below, find f(3): f(x)=2x^4-8x^2+5x-7

2 Answer

  • 98 is your answer plug the three in for any x value
  • We have been given the function


    We have to find the value of f(3). In order to find the same, substitute x=3 in the given function.


    Now, we simplify this step by step.

    First of all [tex]3^4=81\text{ and }3^2=9[/tex]. Thus, we have

    [tex]f(3)=2\times 81 -8\times 9+5(3)-7[/tex]

    Now, we can easily simplify it by PEMDAS



    Therefore, the value of f(3) is 98.