Unit 5 Skills 1-4 Review

Rewrite as a sum.

(4x + 1)(5x − 2)

• 20x² + 3x − 2

• 20x² − 11x + 5

• 20x² − 18x + 2

• 20x² − 3x − 2

Rewrite as a sum.

(2x − 3)(2x + 3)

• 4x² − 12x + 9

• 4x² − 9

• 4x² + 9

• 4x² + 6x − 9

Rewrite as a sum.

-3x²( 7x² - x + 4)

• -21x⁴ + 3x³ -12x²

• 7x² - x + 4 (-3x²)

• 21x⁴ + 3x³ + 12x²

• -12x² + 3x³ -21x⁴

Rewrite as a sum.

(x - 3)(x² + 2x + 7)

• x³ - x² + x - 21

• x³ + 5x + 13x - 21

• x³ - 3x² + 7x - 21

• x² + 2x - 3

Simplify the expression.

4n⁴ - 8n + 4 - (8n² + 4n⁴ + 1)

• -8n² - 8n + 3

• -7n² - 8n + 3

• -6n² - 8n + 3

• -7n² - 4n + 3

Identify the vertex

• (-1,-9)
• (0,-8)
• (-4,0)
• (0,0)

What is the axisof symmetry of the above graph?

• x = 3

• 3

• y = -1

• -1

A parabola has a vertex at (-3,2).
Where is the axis of symmetry?

• y = -2
• x = 3
• x = -3
• y = 2

What are the roots of the function?

• 3

• -6

• -1 and -3

• -6, -1, and -3

If "a" is negative, does the parabola open up or down? Does it have a maximum or minimum?

• Down, Max
• Down, Min
• Up, Max
• Up, Min