For the function shown below, find f(3): f(x)=2x^48x^2+5x7
Mathematics
Niyagarner5328
Question
For the function shown below, find f(3): f(x)=2x^48x^2+5x7
2 Answer

1. User Answers beckafaithbrant
98 is your answer plug the three in for any x value 
2. User Answers Anonym
We have been given the function
[tex]f(x)=2x^48x^2+5x7[/tex]
We have to find the value of f(3). In order to find the same, substitute x=3 in the given function.
[tex]f(3)=2(3)^48(3)^2+5(3)7[/tex]
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
[tex]f(3)=16272+157[/tex]
[tex]f(3)=98[/tex]
Therefore, the value of f(3) is 98.