Question

f(x)= -x^3 + 6x-7 at x=2

Answer 1

f(x) = -3

Explanation:

f(x) = -x^3 + 6x - 7

when x = 2

$f(x)=-(2)^3+6(2)\text{ - 7}$$\begin{gathered} f(x)\text{ = -(8) + 12 - 7 } \\ f(x)\text{ = -8 +12 - 7 } \end{gathered}$

f(x) = -8-7+12 = -15 + 12

f(x) = -3