2-3 Weeks Exam

Find all of the real zeros of the function:  $f\left(x\right)=3x^3+x^2+27x+9$  

•  $\frac{2}{3}$  

•  $-\frac{1}{3}$  

•  $-\frac{1}{3},\pm3$  

•  $\frac{1}{3},\pm2$  

Determine how many possible zeros for:  $f\left(x\right)=3x^{10}-2x^{50}+x^{20}-5x^{40}$  

• at most 10

• at most 20

• at most 40

• at most 50

Which of the statements describes the end behavior of  $f\left(x\right)=x^5-2x^2-3x^3+5$  

• I only

• I and II only

• I and III only

• III only

The degree of the polynomial determines the max 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.HSF-IF.C.7C

If a zero of a polynomial function has multiplicity 4 that means:

• The x intercept is at (4, 0)
• The graph will "bounce back" at that zero
• The graph will "pass through" at that zero
• Zeros cannot have multiplicity of 4

Tags

CCSS.HSA.APR.B.3

Match the graph to the function

• f(x)= -x²+3x+2
• f(x) = -x³+2
• f(x) = x³+2
• f(x) = ⅓x⁴-5x²+2

Tags

CCSS.HSA.REI.D.10

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

If 𝒙²+𝟑𝒙+𝟕 is divided by  𝒙+𝟐, then what is the remainder?

• 0
• -3
• 9
• 5

Tags

CCSS.HSA.APR.B.2

How could you determine    if x-2 is a factor of 2x³-5x²+x-2?

• Use synthetic division and see if the quotient is even
• Ask the person sitting next to me
• Use synthetic division and see if the remainder is zero
• Flip a coin

Tags

CCSS.HSA.APR.D.6

x²-6x+8 ÷ x-2

• x-6
• x-9 R=2
• x-4
• x-8 R=3

Tags

CCSS.HSA.APR.D.6