Question

2. Find(A^ B) if A= B =​

Answer 1

Step-by-step explanation:

I won't solve it for you but surely give you a hint.

Suppose a + b = k & ab = n.

So, b = k-a.

Putting b = (k-a) in ab = n,

a (k-a) = n.

ka - a^2 - n =-0.

a^2 - ka + n = 0.

Use the quadratic formula to get the values of 'a' in terms of k & n. Put them in the original equation to get the values of b. You'll get 2 ordered pairs with values interchanged.

E.g. a + b = 5 & ab = 6.

If you solve it following this given procedure, you get :

(a,b) = (2,3), (3,2).