Keystone Test Keystone Algebra: Polynomials and Quadratic Functions

Question 1

What is the standard form of a quadratic equation?

Accepted Answer

ax² + bx + c = 0

Answer

ax + b = 0

Answer

ax³ + bx² + cx + d = 0

Answer

a/x + b = 0

Question 2

Which of the following is a polynomial expression?

Accepted Answer

3x² + 2x − 5

Answer

3/x + 2

Answer

√x + 4

Answer

x⁻² + 1

Question 3

What are the zeros of f(x) = x² − 9?

Accepted Answer

x = 3 and x = −3

Answer

x = 9 and x = −9

Answer

x = 3 only

Answer

x = 0 and x = 9

Question 4

What is the vertex of the parabola y = (x − 2)² + 5?

Accepted Answer

(2, 5)

Answer

(−2, 5)

Answer

(2, −5)

Answer

(−2, −5)

Question 5

What is the product of (x + 3)(x − 4)?

Accepted Answer

x² − x − 12

Answer

x² + x − 12

Answer

x² − 12

Answer

x² − 7x − 12

Question 6

Which value of x satisfies x² − 5x + 6 = 0?

Accepted Answer

x = 2 and x = 3

Answer

x = −2 and x = −3

Answer

x = 1 and x = 6

Answer

x = −1 and x = 6