Question

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Let f(x) = x2 – 8x + 5. Find f(–1).

–4

12

13

14


I think its the first one but I am not sure?

Answer 1

you replace x with -1, then evaluate/simplify

Answer 2

I got 1?

Answer 3

not sure how

Answer 4

Let f(x) = x2 – 8x + 5. Find f(–1).

-1(2)-8(-1)+5

Answer 5

-2-10+5

-2-10=-12+5=-7

Answer 6

x^2 means x squared

Answer 7

replace x with -1 to get (-1)^2 = 1

Answer 8

oh,

Answer 9

you're not doing x2 = (-1)*2 = -2

Answer 10

also, -8(-1) = +8

Answer 11

Let f(x) = x2 – 8x + 5. Find f(–1).

-1^+8x+5= 12

Answer 12

So B?

Answer 13

f(x) = x^2 – 8x + 5

f(-1) = (-1)^2 – 8(-1) + 5

Answer 14

1+8+5= 14

So D?

Answer 15

yep

Answer 16

YAY thank you.

Answer 17

yw