Question

If x+y=-4 and xy =2 ,then the value of x² +y² is *Jio​

Answer 1

Answer:

12

Step-by-step explanation:

x+y=-4

Squaring both sides, we get

(x+y)² = (-4)²

x²+2xy+y²= 16

But xy =2

x²+ 2×2 +y² = 16

x² + 4 + y² = 16

x² + y² = 16 - 4 = 12