Question

If x+y = 6 and xy = 8, find x2 + y2

Answer 1

HERE IS YOUR ANSWER. .

take the equation x+y = 6

squaring both side

x^2 + y^2 +2xy = 36

x^2 + y^2 = 36 -2xy

x^2 + y^2 = 36 - 2 (8)

x^2 + y^2 = 36 - 16

x^2 + y^2 = 20




HOPE IT HELPS YOU! !!

Answer 2

Answer:x+y=6

xy=8

y=8/x---------i

x+8/x=6

x2+8/x=6

x2-6x+8=0

x2-4x-2x+8=0

x=2,4

Step-by-step explanation: