Question

Which represents a quadratic function?

Answer 1

B. x^2 +2x-5 is a square and basically a quadratic function

Answer 2

Answer:

B)  f (x) = x² + 2x − 5 is quadratic function .

Step-by-step explanation:

Given : Functions .

To find : Which represents a quadratic function.

Solution : We have given functions .

Quadratic function in form of ax² + bx + c = 0 which has degree 2.

Then we can see f (x) = x² + 2x − 5  inform of quadratic function .

Where , a = 1 ,b =2 ,c = -5.

Option D  also has degree 2 but its coefficient of  x² is 0. so, we will not consider it.

Therefore, B)  f (x) = x² + 2x − 5 is quadratic function .