Question 13925
{{{f(x) = -x^2+3x-1}}} Substitute (-x) for x eveywhere and negate the whole right side.
{{{-f(-x) = -(-(-x)^2+3(-x)-1)}}}
{{{-f(-x) = -(-(-x)^2 -3x-1)}}}
{{{-f(-x) = -(-(x^2)-3x-1)}}}
{{{-f(-x) = -(-x^2-3x-1)}}}
{{{-f(-x) = x^2+3x+1}}}