Question

If x+y=9 and xy=11 then find x²+y²

Answer 1

Answer:

X² + Y² = 59. ✔✔

Step-by-step explanation:

${\boxed{\tt{Given\::-}}}$

X+Y = 9

X+Y = 9XY = 11.

We Have tk Find X² + Y² = ?

So we Know that :-

➡(X+Y)² = X² + Y² + 2XY.

So, ➡X² + Y² = (X+Y)² - 2XY.........(i)

Now As Given in question Some values. So let's put it in equation (i)

We Get ,

➡X² + Y² = (9)² - 2(11).

➡X² + Y² = 81 - 22

➡X² + Y² = 59.

_____________________________

Answer 2

Answer:

59

Step-by-step explanation: