Question

Aplique a formula de bhaskara , resolva a equações do 2 grau -x2+5x+6=0

Answer 1

-x²+5x+6=0

a=-1, b=5, c=6

∆=b²-4ac

∆=5²-4.(-1).6

∆=25+24

∆=49

x=-b±√∆/2a

x=-5±√49/2.(-1)

x=-5±7/-2

x1=-5+7/-2=2/-2=-1

x2=-5-7/-2=-12/-2=6

S={-1,6}