Posted by connie on Monday, July 20, 2009 at 11:56pm.

Question

Find the indicated outputs for f(x) = 2x²-4x
f(0)= ____?
f(-1) =____?
f(2) =____?


Responses

math - Reiny, Tuesday, July 21, 2009 at 8:00am
f(0) = 2(0)^2 - 4(0)
= 0*0
= 0

f(-1) = 2(-1)^2 - 4(-1)
= 2(1) + 4
= 2 + 4
= 6

now you try f(2) the same way.

math - connie, Tuesday, July 21, 2009 at 9:02pm
Reiny
I'm still lost
i only got so far.
f(2)=2(2)^2-4(2)
=2(2) from their on i'm lost please help

Answer 1

f(2)=2(2)^2-4(2)
= 2(4) - 8
= 8-8
= 0