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Algebra III - 5.7 - Roots and Zeros

Authored by Elizabeth Malantonio

Mathematics

10th - 12th Grade

CCSS covered

Used 27+ times

Algebra III - 5.7 - Roots and Zeros
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10 questions

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1.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Solve the equation.  x23x10=0x^2-3x-10=0  (Select all that apply)

-2

5

2

-5

Tags

CCSS.HSA-REI.B.4B

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

State the number and type of roots.  x23x10=0x^2-3x-10=0  

2 real roots

5 real roots

2 real roots, 1 imaginary root

3 imaginary roots

3.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

Solve the equation.  0=x380=x^3-8  

 22  

 1+i3-1+i\sqrt{3}  

 1i3-1-i\sqrt{3}  

 2-2  

Tags

CCSS.8.EE.A.2

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

State the possible number of positive real zeros, negative real zeros, and imaginary zeros of the function.  f(x)=x32x2+2x6f\left(x\right)=x^3-2x^2+2x-6  

3 or 1 Positive; 0 Negative; 0 or 2 Imaginary

1 or 3 Positive; 0 or 2 Negative; 0,2, or 4 Imaginary

0 Positive; 0 or 2 Negative; 2 or 4 Imaginary

1 Positive; 1 or 3 Negative; 0 or 2 Imaginary

5.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

Find all the zeros of the function.  f(x)=x3+9x2+6x16f\left(x\right)=x^3+9x^2+6x-16  

-8

8

-2

1

6.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

Find all the zeros of the function.  f(x)=x3+7x2+4x+28f\left(x\right)=x^3+7x^2+4x+28  

-7

7

 2i-2i  

 2i2i  

7.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

Find all the zeros of the function.  f(x)=x46x3+9x2+6x10f\left(x\right)=x^4-6x^3+9x^2+6x-10  

 1-1  

 11  

 3i3-i  

 3+i3+i  

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