Practice problems on complex numbers






In this page practice problems on complex numbers we will see problems on complex addition, subtraction, multiplication, division and problems on quadratic equations.

          Addition

1. Simplify the following.

  1. (2+3i)+(3-4i)
  2. (4-5i)+(-2+3i)
  3. (-5+8i)+(9-11i)
  4. (3+2i)+(-6-9i)

Solution:

           Subtraction

2. Simplify the following.

  1. (2+3i)-(9-11i)
  2. (4-5i)-(3+4i)
  3. (-8+9i)-(-7+5i)
  4. (-8-9i)-(-11-13i)

Solution:

            Multiplication

  1. (2+3i)(4-7i)
  2. (3-i)(8+7i)
  3. (4-2i)(3-5i)
  4. (-5+3i)(-2+i)

Solution:

              Division

  1. (3+2i)/(2+4i)
  2. (2+3i)/(3-2i)
  3. (5-6i)/(6+7i)
  4. (7-5i)/(4-i)

Solution:

          Quadratic equations

Solve the following quadratic equations:

  1. x²/2=2x-4
  2. x²-x+3=0
  3. 2x²-2x+5=0

Solution:

        In this practice problems page we had given problems for practice for addition, subtraction, multiplication and division of complex numbers. We also discussed about quadratic equations having complex roots. Teachers and parents can guide the students to solve the problems and master in operations of complex numbers. The students can try to solve the problems given for practice and master in complex numbers. If you have any doubt please contact us through mail we will help you to clear your doubts.






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