Question

One Word
31. If x + y = 4, xy = 3 then x² + y2​

Answer 1

Answer:

10

Step-by-step explanation:

x+ y = 4

or,(x+y)^2= 4^2

Or,(x+y)^2=16

Or,x^2 +2xy + y^2 = 16

Or,x^2+ y^2 =16-2×3

or, x^2+y^2=16-6

or, x^2+y^2=10