Ismahbath15
Ismahbath15
02-11-2017
Mathematics
contestada
given f(x)=x^2-x; find f(-5)
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ktreyb
ktreyb
02-11-2017
Plug in - 5 where X is.
f(- 5) = (- 5)^2 - ( - 5).
(- 5)( - 5) = 25 so now we have 25 - (- 5). Because there are two negatives back to back, the number becomes a positive so the equation becomes 25 + 5 = 30.
f(- 5) = 30.
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