Finding Zeros of Functions

Find all zeros.

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What is the total number of roots for the following equation?
y = 4x⁶ - 12x⁵ - x⁴ + 2x³ - 6x² - 5x + 10

• 4

• 5

• 6

• 7

Find the roots/zeros of x² + 4x - 21

• -7, 3

• -3, 7

Find the roots/zeros of x² - 3x - 10

• -2, 5

• -5, 2

Find the roots/zeros of x² - 2x - 24

• -6, 4

• -4, 6

Find the roots/zeros of x² - x - 20

• -5, 4

• -4, 5

Find the zero of the following function.

Find the zero of the following function.

Find the roots/zeros of x² + x - 2

• -1, 2

• -2, 1