Quiz 2.5 - Zeros of Polynomials

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

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

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

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

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

All imaginary roots comes in pairs.

• True
• False

Tags

CCSS.HSN.CN.C.9

Which of the following would be the correct factored form with roots 2, 5i, and 6?

• (x-6)(x-2)(x+5i)(x-5i)

• (x+6)(x+2)(x+5i)

• (x-6)(x-2)(x-5i)

• (x+6)(x+2)(x-5i)

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

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

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

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

• 3i²

• -3i

• 3i

• -3i²

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

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

• 8
• -2
• 6
• 1

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

What is the complex conjugate of  4-3i?

• A.  1/(4-3i)
• B. 1/(4+3i)
• C.  -4 + 3i
• D.  4 + 3i

Tags

CCSS.HSN.CN.A.3