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Mathematics 9 Online
OpenStudy (anonymous):

Use the quadratic formula to solve the quadratic equation x^2 − 8x − 4 = 0.

OpenStudy (anonymous):

do you know what the quadratic formula is?

OpenStudy (anonymous):

i know what it is but i havent done it in so long so i forgot it.

OpenStudy (anonymous):

\[x= \frac{-b \pm \sqrt{b^2-4ac}}{2a} \]

OpenStudy (anonymous):

do you know how to use it?

OpenStudy (anonymous):

yes and thank you!

OpenStudy (anonymous):

no problem

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