Practice problem1





              In this page practice problem1 we are going to see how to do add two complex numbers.

Solution:

1. (2+3i)+(3-4i)

        While adding two complex numbers we have to add the real part together and imaginary parts together like ordinary addition of two numbers.

The real parts of the given two complex numbers are 2 and 3.

The imaginary parts of the given two complex numbers are 3i and -4i.

Let us add these now.

                          = (2+3) + (3i-4i)

                          =     5    +   (-1i)

                          =        5-i

2. (4-5i)+(-2+3i)

The real parts of the given two complex numbers are 4 and (-2).

The imaginary parts of the given two complex numbers are (-5i) and 3i.

Let us add these now.

                          = (4-2) + (-5i+3i)

                          =     2   +    (-2i)

                          =        2-2i

3.  (-5+8i)+(9-11i)        

The real parts of the given two complex numbers are (-5) and 9.

The imaginary parts of the given two complex numbers are 8i and (-11i).

Let us add these now.

                         = (-5+9) + (8i-11i)

                         =      4    +    (-3i)

                         =          4-3i

4. (3+2i)+(-6-9i)

The real parts of the given two complex numbers are 3 and -6.

The imaginary parts of the given two complex numbers are 2i and -9i.

Let us add these now.

                        =  (3-6) + (2i-9i)

                        =     -3  +   (-7i)

                        =       -3-7i

Students can practice the problems in the practice problem1 and work out the problems given below and master in complex addition.

Problems for practice:

  1. (-27+3i)+(3-4i)
  2. (2-7i)+(8-7i)

Parents and teachers can guide the students to practice the problems using the model problems. If you have any doubt please contact us, we will help you to clear your doubts.

 





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