Interesting Result from Equation Solving

Consider

x - 1 = 0

The only root of the above equation is 1.

However, when we take
x = 1
and take square of both sides, then

x² = 1
x² - 1 = 0
(x - 1)(x + 1) = 0

Consequently, x = 1 or -1

TWO roots are found, but actually one of them SHOULD BE REJECTED.

*********************

Don't Be Afraid

More than One root found. Don't Be Afraid.

Not all the roots are real. Don't Be Afraid.

Among the real roots, some should be rejected.

Just do it.


More than One girl friend got. Don't Be Afraid.

Not all the girl friends are real. Don't Be Afraid.

Among the real friends, some should be rejected.

Just say it.


More challenging problems ahead. Don't Be Afraid.

Not all of them are real challenges. Don't Be Afraid.

Most of them will be eventually solved.

So just believe it.

We just Don't Need To Be Afraid.