##### Notes

This printable supports Common Core Mathematics Standard HSN-CN.A.1

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# Rewriting Expressions Using i (Grades 11-12)

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## Rewriting Expressions Using i

1.
Simplify the complex number radical expression $sqrt(-1000)$.
1. $10isqrt10$
2. $-10isqrt10$
3. $10sqrt10$
4. $-10sqrt10$
2.
Simplify the complex number radical expression $sqrt {:-1600$.
1. $-40$
2. $40$
3. $-40i$
4. $40i$
3.
Simplify the complex number radical expression $sqrt(-160)$.
1. $-4isqrt10$
2. $-4sqrt10$
3. $4isqrt10$
4. $4sqrt10$
4.
What is $sqrt(-81) ?$
1. $81+i$
2. $81i$
3. $9i$
4. $-9i$
5.
What is $sqrt(-4) ?$
1. $2i$
2. $4i$
3. $4+i$
4. $16i$
6.
Simplify completely. $sqrt(-200)$
1. $10sqrt2$
2. $-10isqrt2$
3. $-10sqrt2$
4. $10isqrt2$
7.
Simplify completely. $sqrt(-169)$
1. $-isqrt13$
2. $-13i$
3. $13i$
4. $+-13$
8.
Which of the following is the correct simplified form of the expression $sqrt(-9) + sqrt(4) ?$
1. $-7i$
2. $2 + 3i$
3. $-3i + 2$
4. $2 - 3i$
9.
What is $sqrt 25 + sqrt(-25) ?$
1. $5i-5$
2. $25+5i$
3. $25i$
4. $5+5i$
10.
Which of the following is the correct simplified form of the expression $-sqrt(-4) - sqrt(9) ?$
1. $-5i$
2. $-3-2i$
3. $3-2i$
4. $2i-3$
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