Question

Which of the following functions is quadratic?

Answer 1

D. f(x) = 2x^2 + 3x - 5

Explanation:

Answer 2

Answer:sd

D.
`f\left(x\right)=2x^2+3x-5`

Explanation:

Given choices are:

`f\left(x\right)=(2)/(x^2)`

`f\left(x\right)=3\left(3-x\right)`

`f\left(x\right)=7^2`

`f\left(x\right)=2x^2+3x-5`

Now we need to find about which of them is the quadratic function.

We know that quadratic function is written in form of
`f\left(x\right)=ax^2+bx+c`

Last choice looks similar to that form.

Hence coorect choice is D.
`f\left(x\right)=2x^2+3x-5`