Question

if x+y=5 and xy=4 find the value x2+y2
DON'T WRITE X -Y WRITE ONLY THE VALUE OF X² + Y² ​

Answer 1

Answer:

17

Step-by-step explanation:

Given,

         x + y = 5

         xy     = 4

Squaring on both sides,

x² + y² + 2xy = 25

x² + y² + 2(4) = 25

x² + y²           = 25 - 8 = 17

Therefore x² + y² = 17.

I hope you find the solution helpful :)