Given the function ƒ (x) = 8x^2 - 14x - 10, find ƒ (-2).

f ( - 2) = 50

Step-by-step explanation:

To evaluate f ( - 2) substitute x = - 2 into f (x)

f ( - 2) = 8 ( - 2) ² - 14 ( - 2) - 10

= 8 (4) + 28 - 10 = 32 + 28 - 10 = 50

f (-2) = 50

Step-by-step explanation:

What f (-2) simply means is that you will substitute - 2 in f (x) = 8x^2 - 14x - 10.

That is wherever you see x you replace it by 2

f (-2) = 8 (-2) ² - 14 (-2) - 10

= 8 (4) + 28 - 10 (note (-2) ² = - 2 * - 2 = 4. Also, - 14 * - 2 = 28)

= 32 + 28 - 10

= 60 - 10

=50

Therefore f (-2) = 50