12x^2-5x-7
plzz solve and give description as i am unfamiliar with it
We don't know what you are supposed to know, but here is methods of solving $\displaystyle 12x^2-5x-7=0$:
Factorizing (either by inspection or using the rational root theorem):
$\displaystyle 12x^2-5x-7=(x-1)(12x+7)=0$
so $\displaystyle x=1$ or $\displaystyle x=-7/12$.
RonL