Question

помогите срочно надо пожалуйста​

Answer 1

$5x - 8(x - 3) = 3x(x - 3) \\ 5x - 8x + 24 = {3x}^{2} - 9x \\ 5x - 8x + 24 - 3 {x}^{2} + 9x = 0 \\ - 3 {x}^{2} + 6x + 24 = 0 \div ( - 3)$

${x}^{2} - 2x - 8 = 0 \\ d = 4 + 32 = 36 = 6 \\ x1 = \frac{2 + 6}{2} = \frac{8}{2} = 4$

$x2 = \frac{2 - 6}{2} = - \frac{4}{2} = - 2$