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OpenStudy (anonymous):
How do I do 7x^2 + x + 2 = 0 by the quadratic formula. Thanks for your help in advance!
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OpenStudy (danjs):
do you know the quadratic formula?
OpenStudy (anonymous):
I think so
OpenStudy (danjs):
ax^2 + bx + c = 0 7x^2 + 1x + 2 = 0
OpenStudy (danjs):
use those values for a, b , and c
OpenStudy (anonymous):
a = 7 b = 1 c = 2?
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OpenStudy (danjs):
yep.. \[x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]
OpenStudy (anonymous):
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