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# Common Core Standard HSN-CN.A.1 Questions

Know there is a complex number i such that i2 = –1, and every complex number has the form a + bi with a and b real.

You can create printable tests and worksheets from these questions on Common Core standard HSN-CN.A.1! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

Grade 11 Complex Numbers CCSS: HSN-CN.A.1
What is $sqrt800 + sqrt(-50)$
1. $20sqrt2+25i$
2. $sqrt800+50i$
3. $20sqrt2 +5isqrt2$
4. $25isqrt2$
Grade 11 Complex Numbers CCSS: HSN-CN.A.1
What is $25 + sqrt(-75)$
1. $25+25i sqrt3$
2. $25+5isqrt3$
3. $5+75i$
4. $5+15i$
Grade 11 Complex Numbers CCSS: HSN-CN.A.1
What is $sqrt(-81)$
1. $81+i$
2. $81i$
3. $9i$
4. $-9i$
Grade 11 Complex Numbers CCSS: HSN-CN.A.1
What is $sqrt 25 + sqrt(-25)$
1. $5i-5$
2. $25+5i$
3. $25i$
4. $5+5i$
Grade 11 Complex Numbers CCSS: HSN-CN.A.1
What is $sqrt(-4) ?$
1. $2i$
2. $4i$
3. $4+i$
4. $16i$
Grade 9 Complex Numbers CCSS: HSN-CN.A.1
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