Am I supposed to solve for x? How do I know where to start, and how do I know when I am done?Quote:

Solve the equation $\displaystyle 2x^2-x-7=0$. Show your work. No decimals answers will be accepted.

- Feb 18th 2009, 01:09 PMcdbmathStupid question...how do I know when I'm done? Solving a polynomial equationQuote:

Solve the equation $\displaystyle 2x^2-x-7=0$. Show your work. No decimals answers will be accepted.

- Feb 18th 2009, 01:20 PMPlato
$\displaystyle x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}

{{2a}}

$