Posted by **hellogoodbie** on Saturday, January 16, 2010 at 3:24pm.

Posted by hellogoodbie on Saturday, January 16, 2010 at 2:59pm.

How is this problem done?

IF f(x)=2x^2-8x-3 FIND f(-2)

algebra 2 - bobpursley, Saturday, January 16, 2010 at 1:42pm

Put in for x the value -2, and compute f(-2)

algebra 2 - hellogoodbie, Saturday, January 16, 2010 at 1:47pm

so is the answer f=21/2? if that is right, thank you bobpursley

algebra 2 - drwls, Saturday, January 16, 2010 at 3:02pm

The answer has to be an integer. In this case, it is 2*4 - 8*(-2) - 3 = 21

algebra 2 - hellogoodbie, Saturday, January 16, 2010 at 3:06pm

where did u get the 4 from?

- algebra 2 -
**bobpursley**, Saturday, January 16, 2010 at 3:45pm
The four came from (x^{2})

two squared is 4

- algebra 2 -
**hellogoodbie**, Saturday, January 16, 2010 at 3:49pm
Wow, I'm so confused. Can somebody just solve this problem step by step please?

- algebra 2 -
**bobpursley**, Saturday, January 16, 2010 at 5:26pm
This is pretty basic. I suggest a tutor.

## Answer this Question

## Related Questions

algebra 2 - Posted by hellogoodbie on Saturday, January 16, 2010 at 3:24pm. ...

algebra 2 - How is this problem done? IF f(x)=2x^2-8x-3 FIND f(-2) algebra 2 - ...

algebra 2 - How is this problem done? IF f(x)=2x^2-8x-3 FIND f(-2) algebra 2 - ...

physics - Posted by michelle quendarsv on Saturday, November 20, 2010 at 5:26pm...

physics - last question - Sam is sitting in her fishing boat watching a trout ...

physics - another question - Sam is sitting in her fishing boat watching a trout...

physics - Posted by michelle quendarsv on Saturday, November 20, 2010 at 3:55pm...

Physics - if it takes 726 watts of power to move a mass 36 meters in 14 seeconds...

Physics - if it takes 726 watts of power to move a mass 36 meters in 14 ...

English - Posted by rfvv on Saturday, September 25, 2010 at 9:16am. 1. Yesterday...