Question

Evaluate the following expression

Answer 1

`2 {x}^(2) - 5xy - {y}^(3) \\ x = - 3 \\ y = - 2 \\ 2 { (- 3)}^(2) - 5 * - 3 * - 2 - { (- 2)}^(3) \\ 2 * 9 + - 30 - - 8 \\ = 18 - 30 + 8 \\ = - 4 \\ thank \: you`

Answer 2

H ;-)

x = -3 and y = -2

2x² - 5xy - y³ =

= 2 · (-3)² - 5 · (-3) · (-2) - (-2)³ =

= 2 · 9 - 30 - (-8) = 18 - 30 + 8 =

= -12 + 8 = -4