Question

For the polynomial f(x)= 2x^3-x^2-4x+9, find f(4).
Show your work so I can see how you figured it? I

Answer 1

For this kind of problem, all you have to do is plug in 4 everywhere there is an x

Answer 2

Can you use a calculator? Because if you can, put the equation in Y=, set the table to 4, and look at the table for y.

Answer 3

I could use a calculator, but I don't have one.

Answer 4

f(4)=2(4)^3-(4)^2-4(4)+9

Answer 5

U can find an online calculator and evaluate that

Answer 6

Have to first apply the exponets

Answer 7

f(4)=2(4)^3-(4)^2-4(4)+9
2(64) -16 -16 + 9
128-16 -16 + 9
105