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OpenStudy (anonymous):
Calculate the discriminant. x^2 + 2x – 2 = 0
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OpenStudy (anonymous):
I got -4 , and I was wrong :(
OpenStudy (whpalmer4):
What are you using for the formula for the discriminant, and what are you using for your values of \(a,b,c\)?
OpenStudy (anonymous):
b^2 -4ac b=2, a=1, c=2
OpenStudy (whpalmer4):
well, one of those is not correct. Compare your equation: \[x^2+2x-2 = 0\]\[ax^2+bx+c=0\]
OpenStudy (anonymous):
The -2 and +C ?
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OpenStudy (whpalmer4):
right. c = -2, not c = 2
OpenStudy (anonymous):
So that's were I got it wrong. Thank you :)
OpenStudy (whpalmer4):
what's your new, improved answer?
OpenStudy (anonymous):
12
OpenStudy (whpalmer4):
very good!
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