Question

Salut!!! Cine imi arata cum se calculeaza ecuatia de gradul trei cu delta? AJUTOR!!! (clasa a X)

Answer 1

$Ai~ecuatia:~a x^{2} +bx+c=0. \\ \\ Calculezi~discriminantul:~\Delta= b^{2}-4ac. \\ \\ Daca~\Delta\ \textless \ 0,~ecuatia~nu~are~solutii~reale. \\ Daca~\Delta=0,~ecuatia~admite~2~solutii~reale~si~egale,~si~anume:~ \\ x_{1} = x_{2}= -\frac{b}{2a} . \\ Daca \Delta\ \textgreater \ 0,~ecuatia~admite~2~solutii~reale~si~distincte: \\ x_{1,2}= \frac{-b \pm \sqrt{\Delta} }{2a} .$