Polynomial Review

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

• 3, √5 
• 3, √5, -√5
• -3, √5, -√5
• -3, 5i, -5i

Find a polynomial function of degree 3 with zeros 3i and -2.

• P(x) = x³+2x²+9x+11
• P(x) = x³-2x²+9x+18
• P(x) = x³+2x²+9x+18
• P(x) = x²-3ix+2x-6i

What is the degree of the polynomial function
P(x)=3x⁴-7x²-2x⁷-x+4

• 4
• 7
• 2
• 11

How many zeros does the polynomial function
 P(x) = 3x⁴+4x-8 have?

• 1
• 2
• 3
• 4

A polynomial function with rational coefficients of degree 4 MUST have at least 1 rational zero.

• True
• False

A polynomial function with rational coefficients of degree 3 MUST have at least 1 rational zero.

• True
• False

State the possible number of REAL ZEROS for the function:
f(x) = 2x⁴ + 19x² + 24

• 4, 2, 0
• 4, 2
• 2, 0
• 4

State the number of IMAGINARY ZEROS for the function:
f(x) = 2x⁴ + 19x² + 24

• 4, 2, 0
• 4, 0
• 4, 2
• 2, 0

What are the x-intercepts of the polynomial y = - (x + 1) x (x - 2) (x - 3)?

• -1, 1, 0, -2, -3
• 1, 0, -2, -3 
• 1, 0, 2, 3
• -1, 0, 2, 3

What are the x-intercepts of the polynomial y = 3 (x + 4) (x + 1) (x - 3)?

• -4, -1, 3
• 3, -3, 4, 1
• 4, 1, -3
• 3, -4, -1, 3