Free Printable Lesson 1.5 Part A Review (Imaginary Numbers)

1.

Simplify

\sqrt{144}

(a)

2.

Simplify

\sqrt{75}

a)

$25\sqrt{3}$

b)

$3\sqrt{25}$

c)

$5\sqrt{3}$

d)

$3\sqrt{5}$

3.

Simplify

\sqrt{28}

a)

$7\sqrt{4}$

b)

$7\sqrt{2}$

c)

$4\sqrt{7}$

d)

$2\sqrt{7}$

4.

What is the value of

\sqrt{-1}

(a)

5.

Simplify $\sqrt{-9}$

a)

3

b)

3i

c)

-3

d)

-3i

6.

$\sqrt{-500}$

Simplify

a)

$10i\sqrt{5}$

b)

$-10\sqrt{5}$

c)

$100\sqrt{5}$

d)

$5i\sqrt{10}$

7.

Solve x² = 25. Select all that apply.

a)

5

b)

5i

c)

-5

d)

-5i

8.

Solve x² = -25. Select all that apply.

a)

5

b)

5i

c)

-5

d)

-5i

9.

Solve x² + 49 = 0. Select all that apply.

a)

7

b)

7i

c)

-7

d)

-7i

10.

Solve 2x² + 5 = -35. Select all that apply.

a)

$2\sqrt{5}$

b)

$-2\sqrt{5}$

c)

$2i\sqrt{5}$

d)

$-2i\sqrt{5}$

Lesson 1.5 Part A Review (Imaginary Numbers)

Total questions: 10

Worksheet time: 7mins

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