Need some help with this please...

f(x)=(squareroot)2-2x x=-4,4

Need to figure out what f(-4)=

Question

Need some help with this please...

f(x)=(squareroot)2-2x             x=-4,4


Need to figure out what f(-4)=

johnweldon1993 · Answer

I'm confused as to what the

x = -4,4 is?

but for f(-4) all you should have to do...is plug in (-4) for every x you see

f(x) = √2-2(-4)
      = √2-(-8)
      = √10

definietly not 100% on this because like I said idk what the x = -4,4 means here

anonymous · Answer

yeah the -4, 4 is the #'s that we are to substitute

anonymous · Answer

I see about plugging in the #'s for x. Thank you John :)

johnweldon1993 · Answer

lol *even though I didn't help much lol* you are very welcome :)