If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g – f)(3)?
2 Answers
Feb 28, 2018
Explanation:
#(g-f)(x)=g(x)-f(x)#
#color(white)(xxxxxx)=6x-(4-x^2)#
#color(white)(xxxxxx)=x^2+6x-4#
#"to evaluate "(g-f)(3)" substitute x = 3 into "(g-f)(x)#
#(g-f)=(color(red)(3))^2+(6xxcolor(red)(3))-4=23#
Feb 28, 2018
23
Explanation: