Question

Lets assume f(x) = x^2 -3x-7

Lets say that f(-5) is what we're solving for.

It would be f(-5) = -5^2 - 3(-5) - 7, yes?

Answer 1

That's what I would say...

Answer 2

25--15-7=25+15-7=40-7=33 yeah

Answer 3

So I wouldn't just replace the x, I would the x^2, too.

Answer 4

f(-5) = (-5)^2 - 3(-5) - 7

Answer 5

You're not replacing the x^2. You're replacing the x. x^2 = (x)*(x)
-5^2 = (-5)*(-5)=25