Which function is a quadratic function

Question

asked Mar 4, 2018 118k views

2 Answers

PatL · Answer 1 · 2018-03-09T21:04:32+0000

Answer:

p(x)=-5x-x^2

C is correct

Explanation:

Quadratic function: A polynomial whose degree is 2 called quadratic function.

Degree = It is highest power of the polynomial.

We have to check the degree of each option.

Option 1:
c(x)=6x+3x^3

Degree = 3

Option 2:
d(x)=x-8x^4

Degree = 4

Option 3:
p(x)=-5x-x^2

Degree = 2

Option 4:
k(x)=2x^2+9x^4

Hence,
has degree 2. It would be quadratic function.