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3.2 Complex and Imaginary Numbers Review

Authored by Christopher Duke

Mathematics

11th - 12th Grade

CCSS covered

Used 28+ times

3.2 Complex and Imaginary Numbers Review
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10 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Simplify:

 −49\sqrt{-49}  

 77  

 −7-7  

 49i49i  

 7i7i  

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Simplify:

 −18\sqrt{-18}  

 6i6i  

 3i23i\sqrt{2}  

 3−23\sqrt{-2}  

 3i3i  

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Simplify:

 5−485\sqrt{-48}  

 20−320\sqrt{-3}  

 4i34i\sqrt{3}  

 20i320i\sqrt{3}  

 −203i-20\sqrt{3i}  

Tags

CCSS.HSN.CN.A.1

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve the Equation: 

 x2=−25x^2=-25  

 x=5, x=−5x=5,\ x=-5  

 x=−5x=-5  

 x=i, x=5x=i,\ x=5  

 x=5i, x=−5ix=5i,\ x=-5i  

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve the Equation: 

 x2+9=5x^2+9=5 

 x=4, x=−4x=4,\ x=-4  

 x=2, x=−2x=2,\ x=-2  

 x=2i, x=−2ix=2i,\ x=-2i  

 x=4i, x=−4ix=4i,\ x=-4i  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Solve the Equation: 

 (x−2)2+25=16\left(x-2\right)^2+25=16 

 x=2+3i, x=2−3ix=2+3i,\ x=2-3i  

 x=3i, x=−3ix=3i,\ x=-3i  

 x=−2+3i, x=−2+3ix=-2+3i,\ x=-2+3i  

 x=2, x=3ix=2,\ x=3i  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Write the expression as a complex number in standard form.



 (2+i)+(3+2i)\left(2+i\right)+\left(3+2i\right)  

 3i+53i+5  

 5+3i5+3i  

 4+7i4+7i  

 −1−i-1-i  

Tags

CCSS.HSN.CN.A.2

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