IMathAS-libretexts

Caught warning in the question code: Use of undefined constant error - assumed 'error' (this will throw an Error in a future version of PHP) on line 1 in Common Control
Error loading library billsmacro Eeek.. unallowed macro smallfb

Function Evaluation
Given the function $\displaystyle {f{{\left({x}\right)}}}=-{x}+$ evaluate each of the following. Give your answers as a simplified expressions written in descending order.
C) Evaluate $\displaystyle {f{{\left({x}^{{2}}\right)}}}$	$\displaystyle {f{{\left({x}^{{2}}\right)}}}=$
D) Evaluate $\displaystyle {f{{\left({x}^{{2}}+{x}\right)}}}$	$\displaystyle {f{{\left({x}^{{2}}+{x}\right)}}}=$
E) Evaluate $\displaystyle {f{{\left(-{x}^{{2}}\right)}}}$	$\displaystyle {f{{\left(-{x}^{{2}}\right)}}}=$