Question

Rez ec: x pătrat - x-6=0

Answer 1

$x^{2} -x-6=0  a=1  b=-1  c=-6  Delta= b^{2}-4ac=1+24=25  \left \{ {{x1=-b+\sqrt{delta}  totul supra 2 = (1+5):2= 3} \atop {x2= -b - \sqrt{delta} }totul supra 2=(1-5):2=2} \right.$