Question

Find the value of f(x) = 8x ^ 2 - 3x + 7 at x = - 1​

Answer 1

Answer:

if you put -1at the plase of x

Step-by-step explanation:

so you get 2

Answer 2

Answer:

For this we have to substitute the value of variable in the function x

f(x) = 8x ^ 2 - 3x + 7

f(-1) = { 8}(-1)^2 - 3(-1) +7 ( Square of -1 is 1 )

f(-1) = {8}(-1) + 3+7

f(-1) = - 8 +10 = 2