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Common Core Standard HSN-CN.A.3 Questions

(+) Find the conjugate of a complex number; use conjugates to find moduli and quotients of complex numbers.

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Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide. -3-4i4-2i
Grade 10 Complex Numbers CCSS: HSN-CN.A.3
Simplify. 1+2i2-3i
  1. (87)+i
  2. (87)+(17)i
  3. -4+7i
  4. -(413)+(713)i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide. 4+8i2i
  1. 2+4i
  2. 4+2i
  3. 4-2i
  4. -2-4i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide. -1-9i-4+5i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide and simplify the complex number expression.
-5-5i
  1. -i
  2. i
  3. i3
  4. -i3
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Simplify. 2-i-3+6i
  1. -49-13i
  2. -415-13i
  3. -415-15i
  4. -15i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide the complex numbers.

3+2i8-i
  1. 2265+1965i
  2. 38-2i
  3. 2263+963i
  4. -138
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide. -8-10i-3+3i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide and simplify the following complex number expression. 4-9i-6i
  1. -32+23i
  2. 32+23i
  3. -32-23i
  4. 33-23i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
What is the conjugate of -4-3i?
  1. 4+3i
  2. -4+3i
  3. -4-3i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Evaluate. 4+2i1-2i
  1. 4-i
  2. 2i
  3. 3
  4. -10i3
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide. -3-i-1+3i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
What is the complex conjugate of -7+15i?
  1. -7-15i
  2. -7+15i
  3. 7-15i
  4. 7+15i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Multiply -i by its conjugate.
  1. -1
  2. 1
  3. 1-i
  4. No conjugate exists
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide. 4i12i
  1. 13
  2. -13i
  3. -13
  4. 1-13i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide. 6-4i-5+5i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Divide and simplify the following complex number expression. -5-9i9+8i
  1. -117145+41145i
  2. -117145-41145i
  3. 117145+41145i
  4. 117145-41145i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
What is the complex conjugate of 3+4i?
  1. -3-4i
  2. -3+4i
  3. 4i+3
  4. 3-4i
Grade 11 Complex Numbers CCSS: HSN-CN.A.3
Evaluate. 36i
  1. 12i
  2. 1+12i
  3. -12
  4. -12i
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