Question

$x + y = 10 \\ x \times y = 8$
find x and y =?

Answer 1

x+y=10
x-y=8
2x =18
x=9
y =10-x
10-9=1
y=1
or
x=10-y
y(10-y)=8
10y-y2 =8
y2 -10y+8=0

Answer 2

Hope it is helpful.....