Question

Need help!! Evaluate. - 3x ^ 3 - 4x for x = - 1 . 07 0-1

Answer 1

Answer:

7

Step-by-step explanation:

$- {3x}^{3} - 4x$

[When x = -1 then]

$= - {3( - 1)}^{3} - 4( - 1)$

= - 3 × (-1) - 4 × (-1)

= 3 + 4

= 7 (Ans)

Answer 2

Answer:

option A

Step-by-step explanation:

$p(x) = -3x^3 - 4x \\\\p(x = - 1 ) = -3( - 1)^3 - 4( - 1 )$

               $= -3(-1) + 4 \\\\= 3 + 4 \\\\= 7$