Adding Subtracting Imaginary and Complex Numbers

Quiz
•
Mathematics
•
12th Grade
•
Hard
+5
Standards-aligned
Anthony Clark
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Leon is asked to simplify √-120. A good first step would be to...
divide 120 by 2
replace the negative with an i on the outside of the radical
take the square root of -120
graph y = √-120
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The complex conjugate can be found by...
Changing the sign of both a and b
Changing the sign of a
Changing the sign of b
Switching the a and b values
Tags
CCSS.HSN.CN.A.3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If you are adding two complex numbers you should
add all the numbers together then divide by 2
add only the real numbers and subtract the complex numbers
add only the complex numbers and subtract the real numbers
add only the real numbers together and then add only the complex numbers together then stop
Tags
CCSS.HSN.CN.A.2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The complex conjugate of 4 + 3i is
3 + 4i
3 - 4i
4 - 3i
4 + 3i
Tags
CCSS.HSN.CN.A.3
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve for x:
x = {-4, -1}
x = {-1, -4}
x = {2+i, 2-i}
x = {-2+i, -2-i}
Tags
CCSS.HSA-REI.B.4B
CCSS.HSN.CN.C.7
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Simplify
(12 - 4i) + (-2 + 8i)
8 + 104i
10 + 4i
14 - 4i
10 - 12i
Tags
CCSS.HSN.CN.A.2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the resulting complex number when Z1 and Z2 are added as vectors?
Z1 + Z2
Z1 - Z2
Z2 - Z1
Z1 * Z2
Tags
CCSS.HSN-VM.B.4A
CCSS.HSN-VM.B.4B
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