Roots of a Polynomial

Find all the roots of y = x³ - 2x² + 4x - 8

• -2, 2i, -2i

• 2, 2i, -2i

• 2,-2, 2i

• 1, 2i, 4

True or False: If (7x + 4) is a factor of some polynomial function, then 4/7 is a zero of the function.

• True

• False

Factor: 49x² - 100

• (49x + 100)(x - 1)

• (7x - 10)(7x - 10)

• (49x - 10)(x + 10)

• (7x -10)(7x + 10)

Tags

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

List the potential real zeros of:
f(x) = 5x³ - x² + 3

• ±1/5, ±3/5, ±1, ±3
• ±1/3, ±5/3, ±1, ±5
• ±1/5, ±3/5, ±1, ±3, ±5
• ±1/5, ±1/3, ±1, ±3, ±5

How many roots or zeros does the equation
f(x) = 5x⁴-8x³+4x²-6x+3 have?

• 3
• 4
• 5
• 0

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.D.11

Find all zeroes given a factor of (x+3).

y = 2x³ + 5x² - 6x - 9

• -1,-3,-3

• -1,-3,3/2

• 3,3,3

• -3,2/3,-1

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

The degree of the polynomial determines the number of roots.

• True
• False

Tags

CCSS.HSN.CN.C.9

What is another way to say "where a function crosses the x-axis"?

• x-intercept
• zero
• root
• all of these.

Tags

CCSS.HSA.APR.B.3

What are the roots of the polynomial  $h\left(x\right)=\left(x-3\right)\left(x+2\right)\left(2x+1\right)$  

• -3,2,1

• 3,-2,-1

• 3,-2, $-\frac{1}{2}$  

• -3,2, $\frac{1}{2}$  

What is the proper way to write the answer for the following problem?

• 2x³-x²-25x+12

• 2x⁴-x³-25x²-12x+0

• 2x³-x²-25x-12

• 2x⁴-x³-25x²-12x-0