Question

me ajudem ?? -6x²-x+1

Answer 1

Vejamos:
-6x^2-x+1=0 >>>>×(-1)
6x^2+x-1=0
D=b^2-4.a.c
D=1-4.6. (-1)
D=25
VD=V25=+- 5
x'=(-1-5)/12=-6/12= -1/2
x"=(-1+5)/12=4/12=1/3
S={( -1/2; 1/3)}
Abraços