If $f(x)=x^2-x$ , how do you find $f(-x)$ ?

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Answer 1 · 2016-08-07T14:25:54

$f(-x)=x^2+x$

To evaluate f(-x) substitute x = - x in f(x)

$f(color(red)(-x))=(color(red)(-x))^2-(color(red)(-x))=x^2+x$

If f(x)=x^2-xf(x)=x^2-x, how do you find f(-x)f(-x)?