[tex] {x}^{2} = 3x | \div x \\ x = 3[/tex]
[tex]4 {x}^{2} = 16x | \div 4x[/tex]
[tex]x = 4[/tex]
[tex] {x}^{2} - 4x + 4 = 0 \\ {(x - 2)}^{2} = 0 \\ x - 2 = 0 \\ x = 2[/tex]
[tex] {8x}^{2} - 14x - 15 = 0 \\ [/tex]
[tex]delta = {b}^{2} - 4ac[/tex]
[tex] = 196 + 480 = 676 \\ x1.2 = \frac{ - b + - \sqrt{delta} }{2a} [/tex]
[tex] \frac{14 + 26}{16} = \frac{40}{16} = \frac{5}{2} [/tex]
[tex] \frac{14 - 26}{16} = \frac{ - 12}{16 } = \frac{ - 3}{4} [/tex]
