8.5, 9.1 & 9.2 Quiz

Which of these can be factored using difference of two squares?

• 144x² - 49y⁴

• x² + 4x - 12

• 100x² + 20x + 1

• 14x² - 16

Factor 25x¹⁶ - 36y²

• (5x⁴ + 6y)(5x⁴ - 6y)

• (5x⁸ + 6y) (5x⁸ - 6y)

• (5x⁴ - 6y)²

• (5x⁸ - 6y)²

The graph of a quadratic function is called

• a line
• a hyperbola
• a parabola
• a cubic

Which of the following are NOT a quadratic function

• f(x) = -3x²

• f(x) = -5x - 3x²

• f(x) = 3x³ - 4x² + 5

• f(x) = 3x + 5

f(x) = 3x² - 4 is a quadratic function

• true

• false

Is this a quadratic function?

• Yes

• No

Is this a quadratic function?

• Yes

• No

Is this a quadratic function?

• Yes

• No

Identify a in the quadratic equation:

x ² + 16x + 64=0

• 2

• 1

• 16

• 64