Question

Let f(x) = x2 - 8x + 5. Find f(-1).

Answer 1

For this you just plug in -1 for all instances of x in f(x).

Answer 2

just plug -1 into your x values so F(x)= (-1)2 - 8(-1) +5 so F(x)= -2 -(-8) +5 when subtracting a negative number you add it so the question becomes F(x)= -2 +8 +5
f(-1)=11

Answer 3

\(f(x)=x^2-8x+5\\
f(-1)=(-1)^2-8(-1)+5\)

Answer 4

unless that's x^2?

Answer 5

if it is the equation turns to F(-1)= 1 + 8 +5

Answer 6

it x^2