Polynomial Zeros Synthetic Division

Remember to look at your roots, multiplicity, and end behavior!! Use your notes!

• y = ^_(x + 2)(x - 1)²

• y = -(x - 2)(x + 1)²

• y = (x - 2)(x + 1)²

• y = -x³

If the graph of a function touches the x-axis, what does that mean about the multiplicity of that zero?

Remember to look at your roots, multiplicity, and end behavior!!

Use your notes!

• Even

• Odd

• None

Identify the zeros: Remember to look at your roots, multiplicity, and end behavior!! Use your notes!

• x=-2, x=-1, x=0

• x=-2, x=0

• x=-1, x=0, x=2

• x=-2, x=0, x=1

Identify the roots

Remember to look at your roots, multiplicity, and end behavior!!

Use your notes!

• x=2, x=6, x=-4

• (x+2)(x+6)(x-4)

• (x-2)(x-6)(x+4)

• x=-2, x=-6, x=4

(x²+4x-45)⁄(x+9) (use synthetic division)

• x+5

• -x+5

• -x-5

• x-5

(2x⁴-7x³+14x²-55x+21)

___________________________

(2x-7)

use synthetic division

• x²+7x-3

• 2x³+14x-6

• x²-7x+6

• 2x³+7x-3

In the above graph, which root has a multiplicity of 2?

Remember to look at your roots, multiplicity, and end behavior!!

Use your notes!

• -1

• -3

• -120

• 4

Which equation MOST LIKELY matches the graph? Remember to look at your roots, multiplicity, and end behavior!! Use your notes!

• y = x⁴ - x³ + 3x² + 2

• y = -x⁴ + x³ + 5x + 2

• y = x³ - 2x² + 1x + 3

• y = -x³ - 2x² + 1x + 3

Match the equation to the graph. Remember to look at your roots, multiplicity, and end behavior!! Use your notes!

• y=-(x+1)(x-2)(x-4)

• y=(x+1)²(x-3)(x-1)³

• y = 3x³ – 2x + 1

• y=(x+1)³(x-3)(x-1)²

Write the factors of the polynomial from the zeros in the graph.

Remember to look at your roots, multiplicity, and end behavior!!

Use your notes!

• (x - 3) (x + 2) (x + 5)

• (x - 5) (x - 2) (x + 3)

• (x + 3) (x + 2) (x + 5)

• (x - 3) (x - 2) (x - 5)