Finding Zeros of a Polynomial Function

Which of the following is NOT a possible rational root. 

• A

• B

• C

• D

Find the zeros of the polynomial.

• A

• B

• C

• D

Given one complex zero use the conjugate root theorem to find another.  Zero is 7-5i

• -7+5i

• 7-5i

• -7-5i

• 7+5i

Find all rational zeros, one zero has been given.
f(x) = x³-3x²-x+3;   3

• 2,4,3

• -1,1,3

• 3,2,1

• 4,5,6

Find all rational zeros, one zero has been given.
f(x) = x³-5x²-2x+24;   -2

• -2,1,0

• -2,-3,-4

• 4,3,-2

• 0,0,0

One zero of 3x³-4x²-28x-16 is 4.
What is another zero?

• 8

• -2

• 6

• 1

Find all zeros for the polynomial function P(x) = x³ -3x²-5x+15. Hint: Factor

• 3, √5 

• 3, √5, -√5

• -3, √5, -√5

• -3, 5i, -5i

How many real zeros does the polynomial function
P(x) = x³+2x²+9x+18 have?

• 0

• 1

• 2

• 3

Below are four possible zeros for this polynomial.
Figure out which one "works" and can be used to find the others.
f(x) = x³ + 2x² - 11x - 12

• -3

• -4

• 1

• 6