Expanded Form of Expression

• 5(x-3)(x+3)

• (5x + 9)(x - 1)

• 5x(x - 9)

Tags

CCSS.HSA.APR.C.4

What is the domain of the function f(x) = √(x - 3)?

• x > 3

• x ≤ 3

• x ≥ 3

• All real numbers

Answer explanation

The expression under the radical has to be greater than or equal to zero.

Simplify the expression below and choose the correct answer:

• x = -3, 2, 4, 5

• x = -2, 3, 4, 5

• x = -3, 2, -4, -5

• x = -3, 2, 9, -20

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA.APR.A.1

Which of the following quadratic equations is written in vertex form, making it easiest to identify the vertex?

• y = x(x - 4)