3.10 Writing Polynomial Equations

• 2

• 1

• 3

• 0

Which equation has ONLY the following roots?

x = {-2,7,3}

• y = (x-2)(x+7)(x+3)

• y = (x+2)(x-7)(x-3)

• y = -2x²+7x+3

• y = 2x²-7x-3

• y = (x+2)(x-7)(x-3)(x)

• undefined 

What are the zeros of the function?

• 4,1

• 3,1,-2,-5

• -3, -1, 2, 5

• -2,4

Write the equation of the quadratic

whose roots are -4, -2.

• x²-6x+8

• x²+6x+8

• x²-4x-2

• x²-2x-4

Write the polynomial in standard form given the following zeros. x = -2, 1, 4

• f(x) = (x+2)(x-1)(x-4)

• f(x) =x³ - 3x² - 6x + 8

• f(x) = x³ + 8

• f(x) = x³ - 3x² + 8

All imaginary roots comes in pairs.

• True

• False

Which of the following would be a root with 3i?

• 3i²

• -3i

• 3i

• -3i²

What is the factored form of the function graphed?

• y = -(x+6)(x-5)(x-8)

• y = -(x-6)(x+5)(x+8)

• y = -(x-5)(x-8)

• y = -(x+6)(x-5)

Which of the equations match the graph shown here?

• y = (x-2)(x-1)(x+1)

• y = (x-2)(x-1)(x+1)²

• y = (x-2)(x-1)²(x+2)

• y = -(x-2)(x-1)(x+1)²

• y = -(x-2)(x-1)²(x+1)