Question

Evaluate the function

Answer 1

`\boxed{f(10) \: is \: 70}`

Explanation:

`f(x) = { - x}^(2) - 3x`

:' Question

Find f(10) ?

:' Solution

`f(x) = { - x}^(2) - 3x`

Substitute x = 10

`f(10) = { (- 10})^(2) - 3(10)`

`f(10) = 100 - 30`

`f(10) = 70`

__________________________

Answer 2

You can put 10 in the equation:
-10^2 -3*10 = -100 -30 = -130