Question

Подскажите пожалуйста !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

${4x}^{2} - 18x + 8 = 0$

$D = {b}^{2} - 4ac = { - 18}^{2} - 4 \times 4 \times 8 = 324 - 16 = 196 = {14}^{2}$

$x1 = \frac{ 18 + 14}{2 \times 4} = 4$

${x}^{2} = \frac{ 18 - 14}{2 \times 4} = 0.5$