Free Printable COMPLEX NUMBERS 2

1.

Simplify the number by using the imaginary number i.

\sqrt{-40}

a)

$2i\sqrt{10}$

b)

$-2i\sqrt{10}$

c)

$8i\sqrt{5}$

d)

$-8i\sqrt{5}$

2.

Simplify the number by using the imaginary number i.

\sqrt{-63}

a)

$-3i\sqrt{7}$

b)

$9i\sqrt{7}$

c)

$-9i\sqrt{7}$

d)

$3i\sqrt{7}$

3.

Write the complex number in the form a+bi.

5+\sqrt{-25}

a)

$5-5i$

b)

$5+5i$

c)

$-5+5i$

d)

$5+5i\sqrt{5}$

4.

Write the complex number in the form a+bi.

\sqrt{-45}\ -13

a)

$-13+3i\sqrt{5}$

b)

$13-3i\sqrt{5}$

c)

$-13-3i\sqrt{5}$

d)

$-13+5i\sqrt{3}$

5.

Write the complex number in the form a+bi.

-\sqrt{-50}-3

a)

$3-5i\sqrt{2}$

b)

$-3+2i\sqrt{5}$

c)

$-3-5i\sqrt{2}$

d)

$3+2i\sqrt{5}$

6.

Write the complex number in the form a+bi.

-\sqrt{-44}+7

a)

$-7+2i\sqrt{11}$

b)

$7-2i\sqrt{11}$

c)

$7-11i\sqrt{2}$

d)

$-7-11i\sqrt{2}$

7.

Find

i^{72}

a)

1

b)

-1

c)

i

d)

-i

8.

Find

i^{435}

a)

1

b)

-1

c)

i

d)

-i

9.

Find

i^{5321}

a)

1

b)

-1

c)

i

d)

-i

10.

Find

i^{1222}

a)

1

b)

-1

c)

i

d)

-i

11.

Find

i^{491}

a)

1

b)

-1

c)

i

d)

-i

12.

Find

2\left(i^{494}\right)

a)

2

b)

-2

c)

2i

d)

-2i

13.

Find

2\left(i^{591}\right)

a)

2

b)

-2

c)

2i

d)

-2i

14.

Find

5\left(i^{27}\right)

a)

5

b)

-5

c)

5i

d)

-5i

15.

Find

-4\left(i^{75}\right)

a)

4

b)

-4

c)

4i

d)

-4i

COMPLEX NUMBERS 2

Total questions: 15

Worksheet time: 4hrs 45mins

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