Complex numbers and roots

Complex numbers and roots

8th - 12th Grade

10 Qs

quiz-placeholder

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Complex numbers and roots

Complex numbers and roots

Assessment

Quiz

Mathematics

8th - 12th Grade

Medium

CCSS
HSN.CN.A.1, HSA-REI.B.4B, HSN.CN.A.3

+1

Standards-aligned

Created by

Ramon Cid

Used 98+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Express  300\sqrt{-300}  in terms of  ii  

 10310\sqrt{3}  

 i300i\sqrt{300}  

 10i310i\sqrt{3}  

 300-\sqrt{300}  

Tags

CCSS.HSN.CN.A.1

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Express  225\sqrt{-225}  in terms of  ii  

 15i15i  

 15i-15i  

 i15i\sqrt{15}  

 i15-i\sqrt{15}  

Tags

CCSS.HSN.CN.A.1

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve the equation 3x2+96=03x^2+96=0  

 ±42\pm4\sqrt{2}  

 ±4i2\pm4i\sqrt{2}  

 2i42i\sqrt{4}  

 ±24\pm2\sqrt{4}  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Solve the equation x2+8x+20=0x^2+8x+20=0  

 4±2i-4\pm2i  

 2i±42i\pm4  

 2±4i-2\pm4i  

 3±2i3\pm2i  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Find the complex conjugate of 1i21-i\sqrt{2}  

 i2+1i\sqrt{2}+1  

 1+i21+i\sqrt{2}  

 2+i12+i\sqrt{1}  

 1+21+\sqrt{2}  

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Find the complex conjugate of 2+i-2+i 

 2+i2+i  

 2i2-i  

 i2i-2  

 2i-2-i  

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

A real number is an imaginary number

Always true

Never True

Sometimes true

Just true

Tags

CCSS.HSN.CN.A.1

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