Question

X2+3x-18=0 me ajudem !!!!

Answer 1

Resposta:

X2+3x-18=0

delt= 3²-4.1.(-18)

delt=9+72

delt= 81

x=$\frac{-3+-9}{2}$

x'$\frac{-3+9}{2} =\frac{6}{2} = 3$

x''$= \frac{-3-9}{2} =\frac{12}{2} =6$