[tex]3 {x}^{2} - 4x = 0[/tex]
[tex]a = 3[/tex]
[tex]b = - 4[/tex]
[tex]c = 0[/tex]
[tex]delta = {b}^{2} - 4 \times a \times c[/tex]
[tex]delta = {( - 4)}^{2} - 4 \times 3 \times 0 = 16 - 0 = 16[/tex]
[tex]x(1.2) = \frac{ - b + - \sqrt{delta} }{2a} [/tex]
[tex]x(1.2) = \frac{ - ( - 4) + - \sqrt{16} }{2 \times 3} [/tex]
[tex]x(1.2) = \frac{4 + - 4}{6} [/tex]
[tex]x(1) = \frac{4 + 4}{6} = \frac{8}{6} = \frac{4}{3} [/tex]
[tex]x(2) = \frac{4 - 4}{6} = \frac{0}{6} = 0[/tex]
