Answers Algebra II Quadratics and Complex Numbers — TestQuestion 22

22

QuizMultiple Choice

Quadratics and Complex Numbers — Test

Question 22 • Algebra II

Which function is a quadratic function?

Answer

A

c times x is equal to negative 8 x squared plus 3 x minus 5

B

A times x is equal to negative 2 x cubed plus 2 x minus 6

C

d times x is equal to 6 x to the 4th power plus 2 x minus 3

D

b times x is equal to 5 x cubed plus 8 x squared plus 3

Explanation

A quadratic function is a polynomial whose highest power of x is 2. Choice B, c(x) = −8x² + 3x − 5, has highest power 2, so it is quadratic. Choices A and D include an x³ term, and choice C includes an x⁴ term.

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