Question

$\: if \: we \: know \: \alpha + \beta \: and \: \alpha \beta \: then \: how \: to \: find \: \alpha \: and \: \beta$

Answer 1

If you know the value of alpha + beta and alphabeta, then simply solve and find the value of both alpha and beta by the method of substitution. 

You know that alpha + beta = 5 (For example)

Then, beta= 5 - alpha

So alphabeta = alpha * 5- alpha.


So, now you have the equation in one variable, and you can easily find out the value of alpha.

Once you get the value of alpha substitute it in the above equation (Beta= 5- alpha) and calculate the value of beta. 

NOTE : I have taken 5 as an example, so don't get confused. 

Answer 2

Hey !!!

if you know the @ + bita and @×bita

then , just used this formula

(a - b)² = (a +b)² - 4ab

then, you get (@ -bita )² = (@ + bita )2-4@×bita

@ - bita = √(@+bita)²-4@×bita

after that just substract or add to (@+bita ) .

like that we get

let we get @ +bita = x

and @ -bita = y

@ - bita =y
@+bita =x
-------------
2@ = x +y

now substitute the value of @ on @ + bita or @ - bita then you get value of bita

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Hope it helps you !!!

@Rajukumar111