Respuesta :
Answer:
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
Answer:
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
