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9th
-
12th
grade

Mathematics

66%

accuracy

111

plays

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3 years

Mathematics

9th -

12thgrade

Operations on Complex Numbers

user

111
plays

8 questions

8 questions

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1. Multiple Choice
1 minute
1 pt
Write $\sqrt{-9}$ in the form $a+bi$ .

3i
9i
3
9
2. Multiple Choice
3 minutes
1 pt
Simplify. Write your answer in the form $a+bi$ .
$\left(2+4i\right)-\left(1-2i\right)$
$3+2i$
$1-2i$
$1+6i$
$10$
3. Multiple Choice
3 minutes
1 pt
Simplify. Write your answer in the form $a+bi$ .
$\left(5i\right)^2$
$25i^2$
$-25$
$5i^2$
$25$
4. Multiple Choice
3 minutes
1 pt
Simplify. Write your answer in the form $a+bi$ .
$3i\left(-1+5i\right)$
$-3i+15i^2$
$-1+8i$
$12i$
$-15-3i$
5. Multiple Choice
3 minutes
1 pt
Simplify. Write your answer in the form $a+bi$ .
$\left(5-3i\right)\left(-2+4i\right)$
$2+26i$
$3+i$
$-10-12i^2$
$-22+14i$
6. Multiple Choice
3 minutes
1 pt
Simplify. Write your answer in the form $a+bi$ .
$\left(-3+2i\right)\left(1+5i\right)$
$-2+7i$
$-13-13i$
$-3+10i^2$
$7+13i$
7. Multiple Choice
3 minutes
1 pt
Simplify. Write your answer in the form $a+bi$ .
$\left(-2-i\right)^2$
$5$
$5-4i$
$3+4i$
$4+i^2$
8. Poll
1 minute
Ungraded
How are you feeling about Operations on Complex Numbers (Adding, Subtracting, & Multiplying)?
Complex Numbers??? I NEED HELP!!!
I can do these with some help and need some extra practice.
I'm pretty confident and can do these on my own.
I could teach a class on this!
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