7.2 Practice (part a)

How many zero's real or imaginary can a degree 4 function have?

• zero, zippo, none, nada

• 4

• 3

• 2

• 1

Find the roots of 0=x³-4x²+2x-8

• ±2,4
• ±2i,4
• ±i√2,4
• ±√2,4

Tags

CCSS.HSA.APR.B.3

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

Use the Rational Root Theorem to list the possible rational zeros.

• A
• B
• C
• D

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

Use the factored form of the function to find the zeros.  (hint: set each factor = 0)

• A
• B
• C
• D

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

Find ALL zeros

• A
• B
• C
• D

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

Find all zeros of the polynomial

• A
• B
• C
• D

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

Find all the zeros of this polynomial.

• A
• B
• C
• D

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

Factor the polynomial and state the roots.  $x^3+2x^2+4x+8=0$  

•  $\left\{2,\ 2i,\ -2i\right\}$  

•  $\left\{-2,\ 2i,\ -2i\right\}$  

•  $\left\{-2,\ 2,\ -2i,\ 2i\right\}$  

•  $\left\{2,\ 2i\right\}$  

Factor each polynomial and state the roots.  $x^4-12x^2+32=0$  

•  $\left\{2,\ \ 2\sqrt{2}\right\}$  

•  $\left\{2,\ -2,\ 2\sqrt{2}\right\}$  

•  $\left\{2,\ -2,\ \sqrt{8}\right\}$  

•  $\left\{2,-2,\ 2\sqrt{2},-2\sqrt{2}\right\}$