SOLUTION: Find the cartesian eq'n of the following parametrics: {{{x=s^2+s}}}, {{{y=s^2-s}}} {{{s>0}}} I tried x-y and x+y but still s or s^2 left. Also I tried making s^2 subject and s su

Question 1154964: Find the cartesian eq'n of the following parametrics:
,
I tried x-y and x+y but still s or s^2 left. Also I tried making s^2 subject and s subject in each one and tried subbing in each other to cancel out the s's, so close but didn't work.
Last thing I tried was squaring both sides for each but could not get rid of the
Please help, thank you very much.
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

Good start... and you're almost there.

But, at least in my experience, it takes a lot of practice to see where to go with this kind of problem to get where you want to end up.

Given:

Look at x+y and x-y:

From here you said you tried squaring both of those.

Try squaring only the second one....

I think you will see where to go after that to get an equation involving only x and y.

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