Finding Zeros

Find all rational zeros
f(x) = x³-3x²-x+3

• 2,4,3

• -1,1,3

• 3,2,1

• 4,5,6

If 2i is a zero, then

• 2i repeats twice

• -2i is a zero too

• 1-2i is a zero too

• 0+2i is a zero too

Tags

CCSS.HSN.CN.C.9

Use the Fundamental Theorem of Algebra to state the number of zeros/solutions/roots of the polynomial. 

• A

• B

• C

• D

Tags

CCSS.HSA.APR.B.3

CCSS.HSN.CN.C.9

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

• 4

• 7

• 2

• 1

Which of the following is a 5th degree trinomial with a leading coefficient of -2? 

• -2x⁵ + 3x - 1

• 5x^-2 +3x - 1

• -2x⁵ + 3x⁴ + 2x³ + x² - 10

• 2x + 5

Find all the roots of y=x³-2x²+4x-8  (Hint: Factor)

• -2, 2i, -2i

• 2, 2i, -2i

• 2,-2, 2i

• 1, 2i, 4

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

Find all zeros of the polynomial function P(x) = x³+6x²+9x+54

• 6, 3, -3

• -6, 3, -3

• -6, 3i, -3i

• 6, 3i, -3i

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.3

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

• 1

• 2

• 3

• 4

Tags

CCSS.HSA.APR.B.3

Find all points of intersection with the x-axis
(x-5)(x²+49)(x+4)

• 5,±7i,-4

• -5,±7,-2

• 5,±7i,4

• -5,±6i,-4