In this video, we will learn how to perform mathematical operations on complex numbers, so we will
start with addition and subtraction.
Suppose these are the two complex numbers, one and two.
And we have to add that the addition is very simple and straightforward.
During addition, you have to add the number of first complex number to that number of second complex
numbers.
So you have to add two and seven.
Similarly, you have to add the immediately numbers of both complex number.
That is, you have to add three and five.
So if you add two and seven, these two are the real number.
You will get nine, which is also the number.
And if you aggregate it and find it, you will get it.
So the sum of that one and two is nine plus eight.
Similarly, subtraction is the same as a in order to subtract too complex numbers, you have to subtract
that part of a second complex number from Adiele.
Part of the first complex number that is you have to subtract seven from similarly, you have to subtract
five different reedit.
So if you do that, you will get minus five minus do so subtraction and addition.
These are very simple and straightforward mathematical operations on complex number, no move on to
multiplication.
And so we will start with multiplication.
So if you have to multiply two numbers, Z one and Z two, the multiplication is also not very difficult.
So in multiplication, you have to multiply these two with both Feynman and 5G and then you have to
multiply that in part with both seven and five.
So basically in multiplication, the real part and imaginary part of a first number will be multiply
it both real and the imaginary part of the second complex element.
So let's see how we can do that.
So first, we have to multiply the real part with the second complex number, that dissemblers find
it and then you have to multiply the imaginary part of the first complex number with the whole second
complex number.
So if you multiply this, you will get two times of seven is forty, then two times of extend extended.
Three times of Semin is 20 wounded, and this last step is very important.
If you multiply three dead with five dead, you will get 15 Josquin and from the previous leg, you
know that GSW is equal to minus one.
So 15 multiply by minus one will be minus 15.
And the last step will be 14.
Minus 15 is equal to minus one.
And then 10, 20, 20 is 30.
So your final answer of multiplying these two complex number will be minus one, plus 31.