karissesey
karissesey
07-12-2021
Mathematics
contestada
if f (x)=x^2-x-1, then f(-5)=
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loneguy
loneguy
07-12-2021
[tex]\text{Given that,}\\\\f(x) = x^2-x -1\\\\f(-5) = (-5)^2 -(-5) -1 = 25 +5 -1 = 29[/tex]
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godlike74
godlike74
07-12-2021
Substitute -5 for x
f(-5) = -5^ 2 - (-5) - 1
= 25 + 5 - 1
=29
Hope this helps!
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