Question

помогите пожалуйста!

Answer 1

1)
$\sqrt[3]{ \frac{ {x}^{9} {y}^{6} {z}^{3} }{4 \times {( - 2)}^{4} } } = \sqrt[3]{ \frac{{x}^{9} {y}^{6} {z}^{3} }{64} } = \frac{ {x}^{3} {y}^{2} z}{4}$
2) По теореме Виета:
x1 + x2 = 60/25 = 12/5
x1*x2 = -25/25 = -1
$\frac{4 \times ( - 1)}{ \frac{12}{5} } = - \frac{4 \times 5}{12} = - \frac{5}{3} = - 1 \frac{2}{3}$