Question

x + y = 5 , x² + y² = ?​

Answer 1

Answer:

x + y = 5

x² + y² = 15

( x + y )² = x² + y² + 2xy

5² = 15 + 2xy

25 - 15 = 2xy

20 = 2xy

The value of xy = 10

Step-by-step explanation:

Mark me as braineist