Real number?
There are two words REAL AND NUMBER.we all of us know that there are various types of numbers like. 0.1.2.3
-1.-2.-3
0.1,0.2,0.3
Roots.
Etc.
But what is the significance of word REAL.
That means if real word exist that means there should be another words that is called IMAGINARY.
square root of 2 is real number.
But square root of(-2)is imaginary number.
And .
Real+imaginary=complex number.
In class 10 you Will read only about only real number like 123,-1.-2.-3,0.1,0.2,root of 2
Imaginary number are like root of -2.they are denoted by (i) and square of i is -1.
I hope you are satisfied