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Linear Algebra 20 Online
OpenStudy (anonymous):

How do I factor: 3x^2+10x-21

OpenStudy (noelgreco):

You can solve it using the quadratic formula or by completing the square, but it can't be factored.

TheSmartOne (thesmartone):

\(3x^{2}+10x-21 \) You can not factor it but you can use the quadratic formula.

TheSmartOne (thesmartone):

Quadratic Formula finds the roots. \[x=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\] where a, b, and c are as follows in the equation ax^2+bx+c

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