If #f(x) = 5x^2+6# and #g(x) = -3x+3#, what is #(f-g)(-3)#?
3 Answers
Mar 2, 2018
Explanation:
Remember that
Here,
So, we now have
Our answer.
Mar 2, 2018
Explanation:
#(f-g)(x)=f(x)-g(x)#
#color(white)((f-g)(x))=5x^2+6-(-3x+3)#
#color(white)((f-g)(x))=5x^2+6+3x-3#
#color(white)((f-g)(x))=5x^2+3x+3#
.
#(f-g)(color(red)(-3))=(5xx(color(red)(-3))^2)+(3xxcolor(red)(-3))+3#
#color(white)(xxxxxxxx)=(5xx9)-9+3#
#color(white)(xxxxxxxx)=45-9+3=39#
Mar 2, 2018
39
Explanation:
we have got f(x)=
we have to find f-g..so lets find it f-g=
now put x=-3 in above equation
we ll get result
thnx!!!