advanced math
posted by Sharon
I did the math for the previous problem I posted, using this formula: b+ or  the square root of b^24ac/2a. When I did this for x^2+2x1, I got 0/2. I did the math and the x and y intercept came out to be 2 and 2. But when I graphed this on my graphic calculator, the points didn't cross through 2, and my answer sounds wrong. How can I fix this?

bobpursley
a=1 b=2 c=1
b^24ac is zero
x=1, double root. I don't know how you got zero and 2 
No name
by using the formula you should get
x1=x2=1
so your graph will be upside down porabola with y intercept at 1 so the graph will cut the yaxis at 1, and touch the xaxis at 1.
:) 
Sharon
Thank you no name. :)
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