Imaginary Numbers | Algebra II Quiz

Imaginary Numbers

10th - 12th grade

2565 times

Mathematics

61%average accuracy

2 years ago

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17 QuestionsShow answers

Question 1
SURVEY
120 seconds
Q. Simplify √-4
answer choices
2i
-2i
2
4i
Tags:
Question 2
SURVEY
120 seconds
Q. Simplify -√-8
answer choices
-i√8
-2i√2
2i√2
-8i
Tags:
Question 3
SURVEY
60 seconds
Q. Calculate:
i + 6i
answer choices
6i²
7i
5i
7i²
Tags:
Question 4
SURVEY
120 seconds
Q. Calculate:
(4 − 7i) − (-3 + 6i)
answer choices
7 − 13i
7 − i
1 − 13i
1 − i
Tags:
Question 5
SURVEY
120 seconds
Q. Calculate:
(1 − 2i) + (-4 + 2i)
answer choices
-3
-3 − 4i
5 − 4i
5
Tags:
Question 6
SURVEY
60 seconds
Q. What does i²= ?
answer choices
1
-1
√-1
√1
Tags:
Question 7
SURVEY
120 seconds
Q. Calculate:
-4 (13 + 5i)
answer choices
-52 − 20i
9 + i
17 − 20i
-52 + 20i
Tags:
Question 8
SURVEY
120 seconds
Q. 6i (-5 + 10i)
answer choices
-30i + 60i²
30i − 16i²
11i + 60i²
-11i²+ 16i
Tags:
Question 9
SURVEY
300 seconds
Q. Calculate (multiply):
(4 + 3i)(4 − 3i)
answer choices
16 − 9i²
25
7
8 − 6i
Tags:
Question 10
SURVEY
300 seconds
Q. Calculate (multiply):
(1 − 2i)(6 + 5i)
answer choices
16 − 7i
-16 + 7i
-16 − 7i
16 + 7i
Tags:
Question 11
SURVEY
60 seconds
Q. Find the conjugate of:
5 + 7i
answer choices
5 − 7i
-5 − 7i
-5 + 7i
Tags:
Question 12
SURVEY
60 seconds
Q. Find the conjugate of:
-4 − 8i
answer choices
-4 + 8i
4 − 8i
4 + 8i
Tags:
Question 13
SURVEY
300 seconds
Q. Calculate(Divide, multiply by conjugate):
answer choices
12/5 − 4/5i
-8/10i − 4/5
-4/5 + 12/5i
12/5 + 4/5i
Tags:
Question 14
SURVEY
300 seconds
Q. Calculate(Divide, multiply by conjugate):
answer choices
-3/4 − 1/4i
3/4 + 1/4i
-3/4 + 1/4i
3/4 − 1/4i
Tags:
Question 15
SURVEY
180 seconds
Q. Simplify:
(10+ 15i)-(48 - 30i)
answer choices
58 - 45i
58 - 15i
-38 - 15i
-38 + 45i
Tags:
Question 16
SURVEY
120 seconds
Q. i⁷
answer choices
i
-i
1
-1
Tags:
Question 17
SURVEY
30 seconds
Q. i¹³
answer choices
-1
1
i
-i
Tags: