F (x) = 2x & # 178; + 4, X ∈ [- 2,2]

F (x) = 2x & # 178; + 4, X ∈ [- 2,2]

x∈[-2,2]
Domain symmetry
f(x)= 2x²+4
f(-x)=2(-x)²+4=2x²=4
So it's even