Question 70856
Both are even since they have symmetry across the y axis. Also f(x)=f(-x) is applicable to both of these equations which means they are even. For instance if I  plug in x=2 into a) I get
{{{(2)^2-2=2}}} 
Now let x=-2
{{{(-2)^2-2=2}}}Which proves f(x)=f(-x) and shows it is an even equation. The same applies to the 2nd one also.