How do you find #f(2)# given #f(x)=9x^3-x^2+2#?
1 Answer
Aug 5, 2016
f(2) = 70
Explanation:
To evaluate f(2)
#color(blue)"substitute x = 2 in f(x)"#
#rArrf(color(red)(2))=9(color(red)(2))^3-(color(red)(2))^2+2#
#=(9xx8)-(2xx2)+2=72-4+2=70#
#rArrf(2)=70#
