SOLUTION: I have been over and over this and can't find my mistake please solve y=x^2-3x-2 for a graphing parabola

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Question 947763: I have been over and over this and can't find my mistake please solve y=x^2-3x-2
for a graphing parabola
Found 2 solutions by Alan3354, MathLover1:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
I have been over and over this and can't find my mistake please solve y=x^2-3x-2
for a graphing parabola
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Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

y=x%5E2-3x-2 ...easiest way to solve this is to set y=0 and use quadratic formula

0=x%5E2-3x-2 ...coefficients are: a=1,b=-3, and c=-2
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+

x+=+%28-%28-3%29+%2B-+sqrt%28+%28-3%29%5E2-4%2A1%2A%28-2%29%29%29%2F%282%2A1%29+

x+=+%283+%2B-+sqrt%28+9%2B8%29%29%2F2+
x+=+%283+%2B-+sqrt%28+17%29%29%2F2+
exact solutions:
x+=+%283+%2B+sqrt%28+17%29%29%2F2+
or
x+=+%283-+sqrt%28+17%29%29%2F2+

approximate solutions:
x+=+%283+%2B+sqrt%28+17%29%29%2F2+
x+=+%283+%2B+4.12%29%2F2+
x+=+7.12%2F2+
x+=+3.56+
or
x+=+%283+-+sqrt%28+17%29%29%2F2+
x+=+%283+-4.12%29%2F2+
x+=+-1.12%2F2+
x+=-0.56+

+graph%28+600%2C600%2C+-10%2C+10%2C+-10%2C+10%2C+x%5E2-3x-2%29+