Thread: Solve a pair of intersecting lines

Hi there,

Can anyone offer some advice on how one would go about solving this equation? I can't figure it out!

(x+2)(y+2)+(x-3)(y+2)=0


Thanks in advance,

Josh

only when and
when x = -2 or y = -2
when x = 3 or y = -2
y=-2 is the only one which makes both eqn 0, so y = -2 is the soln.

Hi Dave,

Thanks for your reply.

That makes sense but I'm wondering if there's an algebraic methodology I can use? I know that the other solution is x=0.5, so can I do the following:

Ignore (y+2) and (y+2) so you have
X + 2 + x - 3
= 2x -1
X = -0.5

This comes out, but doesn't seem like its the correct way to go about it!