Question

Resolva as raizes das equações:
a) 6x² +x -2 = 0
b) 3x² -21x +9 = 0
c) 9x² -12x -1 = 0

Answer 1

a) ∆h= 1-4.6.(-2)
∆h= 1+24
∆h=25
x1= 1+5/2.-2
x1= 6/-4= -3/2

x2= 1-5/2.-2
x2= -4/-4
x2= 1
fico devendo o resto