someday1 someday1

24-09-2017
Mathematics

contestada

If f(x)=x^2-3x,find f(-18). Show work

Respuesta :

jimthompson5910 jimthompson5910

24-09-2017

Answer: 378

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Work Shown:

f(x) = x^2 - 3x
f(x) = ( x )^2 - 3*( x )
f(-18) = ( -18 )^2 - 3*( -18 ) ... replace every x with -18; now use PEMDAS
f(-18) = 324 - 3*( -18 )
f(-18) = 324 + 54
f(-18) = 378

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