Question 908954
F(X) means integrate/antidifferentiate f(x)

{{{f(x) = 6x + 4}}}
{{{F(x) = 6x^2/2 + 4x + c}}}
therefore {{{3x^2 + 4x + c}}}

whenever integrating dont forget the + c if it is an indefinite integral like this i.e there is no upper/lower limit