math
posted by korain on .
show that the equation x^2+2xy+y^2+x+y2=0 rebresent two paralil lines and find the equations of thos lines

x^2+2xy+y^2+x+y2=0
Decomposition:
(x+y1)(x+y+2)=0
Expresion has zeros when:
x+y1=0
and
(x+y+2)=0
x+y1=0
y= x+1
x+y+2=0
y= x2
Equation of sraight line:
y = mx + b
m=slope
b=yintercept
y= x+1 Slope 1
y= x2 Slope 1
Lines with the same slope are parallel.