Question

F(x)=3x square + x f(-5)

Answer 1

Answer:

If you need the answer as f by simplifying both sides of the equation and then isolating the variable, the answer would be:

$xf=\frac{3x^2}{5}-\frac{f(x)}{5}$

Or, if you need to evaluate the function itself, the answer would be:

$f(x)=3x^2-5xf$