Question

Conta completa da equacao x elevado a 2 +5×-6=0

Answer 1

x²+5x-6=0

a=1      b=5     c=-6

Fórmula de bhaskara:
x=-b±√b²-4.a.c/2.a

Resolvendo:

x=-5±√5²-4.1.-6/2.1
x=-5±√25+24/2
x=-5±√49/2
x=-5±7/2

x'=-5+7/2=1  ou  x"=-5-7/2=-6