Finding Zeros of Polynomial Functions

Find the roots/zeros of x² + 4x - 21

• -7, 3

• -3, 7

Find the roots/zeros of x² - x - 20

• -5, 4

• -4, 5

Solve
x² + 2x - 24 = 0

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

Solve
x² + 7x + 12 = 0

• x = -2, x = -10

• x = -3, x = -4

• x = -4, x = -5

• x = -4, x = -6

The x-intercepts of a quadratic equation are known as the _____.

• vertices

• squares

• zeros

• formulas

Find the roots/zeros of x² + x - 2

• -1, 2

• -2, 1

Find the roots/zeros of x² - 3x - 10

• -2, 5

• -5, 2

Find the roots/zeros of x² - 2x - 24

• -6, 4

• -4, 6

Factor x² - x - 20

• (x + 5)(x - 4)

• (x - 5)(x + 4)

Find the roots/zeros of x² + 5x -14

• -2, 7

• -7, 2