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OpenStudy (weemzman):
What is the value of b2 - 4ac for the following equation? 2x^2 + 3x = -1
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sam (.sam.):
\[2x^2 + 3x = -1\] \[2x^2+3x+1=0 ~~\leftarrow ~Relate~this~\to~~ax^2+bx+c=0\]
sam (.sam.):
a=2 b=3 c=1
sam (.sam.):
\[b^2-4ac\] Put the values in and you're done
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