How to add complex numbers

Practice Questions

SAT Math › How to add complex numbers

Questions

8

1

Simplify: $\sqrt{-3}+\sqrt{-9}+\sqrt{-16}$

2

Evaluate:

$i^{6} + i^{7}+ i^{8}+ i^{9}$

3

Add $5 + i \sqrt {5 }$ and its complex conjugate.

4

Add $13 - i \sqrt{13}$ to its complex conjugate.

5

Simplify:

6

Evaluate:

$9i^{9}+ 10 i^{10}+ 11 i^{11}+ 12 i^{12}$

7

For $i=\sqrt{-1}$ , what is the sum of $\frac{3}{2} + \frac{1}{4} i$ and its complex conjugate?

8

An arithmetic sequence begins as follows:

Give the next term of the sequence

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