Question

if X + Y = 8 and xy equals to 15 find X square + Y square.​

Answer 1

Answer:

34

Step-by-step explanation:

X+Y=8

(X+Y)2=8×8

X2+Y2+2XY=64

X2+Y2+30=64

X2+Y2=34

Answer 2

Answer:

Let X=3 and y=5

Step-by-step explanation:

x+y=3+5=15

X*Y=3*5=15

Then

X^2=3^2=6

Y^2=5^2=25