synthetic division
find f(-2)
f(x)=2x^4+4x^3+2x^2+3x+8
-2 2 4 2 3 8
-4 0 -4 2
2 0 2 -1 10
f(2)=10
check
f(x)=2(-2)^4+4(-2)^3+2(-2)^2+3(-2)+8
f(x)=10
find f(-2)
f(x)=2x^4+4x^3+2x^2+3x+8
-2 2 4 2 3 8
-4 0 -4 2
2 0 2 -1 10
f(2)=10
check
f(x)=2(-2)^4+4(-2)^3+2(-2)^2+3(-2)+8
f(x)=10