SOLUTION: How do I prove y+x^2-2x= -1? Thanks for any help!!

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Question 73159: How do I prove y+x^2-2x= -1? Thanks for any help!!
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
If you're solving for x, isolate y
y%2Bx%5E2-2x=+-1Add 2x and subtract x^2 from both sides
y=-x%5E2%2B2x-1Now let y=0 and solve for x
0=-x%5E2%2B2x-1
0=-%28x%5E2-2x%2B1%29Factor out a -1
0=-%28x-1%29%28x-1%29%29Now factor the right side
0=-%28x-1%29%5E2%29Rewrite the right side
0=x-1Take the square root of both sides
x=1 is a solution
Hope that helps.