Quadratic Factors and Zeroes

Which statement is true for the function
x² - 5x - 24

• The zeroes are -3 and -8 because the factors are (x + 3)(x + 8)

• The zeroes are -3 and 8 because the factors are (x + 3)(x - 8)

• The zeroes are 3 and -8 because the factors are (x - 3)(x + 8)

• The zeroes are 3 and 8 because the factors are (x - 3)(x - 8)

Keith determines the zeroes of the function f(x) to be -6 and 5. What could be Keith's function?

Mathematical Equivalence

ON

Which statement is true for the function
x² + 4x - 45

• The zeroes are -5 and -9 because the factors are (x + 5)(x +9)

• The zeroes are -5 and 9 because the factors are (x + 5)(x - 9)

• The zeroes are 5 and -9 because the factors are (x - 5)(x + 9)

• The zeroes are 5 and 9 because the factors are (x - 5)(x - 9)

What are the zeroes?

• (-4, 0) and (-2, 0)

• (0, -4) and (0, -2)

• (-3, -1)

• (0, 8)

Given the zeros below, what are the factors?

• (x-3) (2x-1)

• (x-3) (2x+1)

• (x+3) (2x-1)

• (x+3) (2x+1)

Which of the following is the correct equation for the given graph?

Write a quadratic equation for the graph.

• x² + 4x - 3

• x² - 2x - 3

• x² + 2x - 3

• x² - 4x - 3

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

x² + 44 = -15x

• {-8, 2}

• {-7, 5}

• {-11, -4}

• {-11}

x² + 4 = 68

• ± 8

• ± √8

• 8

• ± 64