It can't be isosceles triangle because has at least one line of symmetry and an equilateral triangle has three lines of symmetry... While scalene does not have enough space to have sides with equal length.
-3x^2-2x (+-)6=0 ax^2+bx+c a=-3 b=-2 c= either positive or negative 6 (there is no plus or minus in your question.) What are the answer choices? It might help.
