Lucario663 Lucario663

22-12-2020
Mathematics

contestada

If f(x)= x^2-6x-14 find the value of f(-2) (I prefer some kind of help rather than an answer, but answers are welcome)

Respuesta :

ChoiSungHyun ChoiSungHyun

22-12-2020

Step-by-step explanation:

In order to figure out what is f(-2), we substitute all the "x" in the function with "-2" like this:

f(-2) = x² - 6x - 14 = (-2)² - 6(-2) -14

Now we can follow PEMDAS:

(-2)² - 6(-2) -14

= 4 + 12 - 14

= 2.

Hence, f(-2) = 2.

Answer Link

samanthalinkous142 samanthalinkous142

23-12-2020

Plug -2 in for x throughout the equation. f(x) = -2^2 - 6(-2) - 14. Then solve.

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