17 + 2(4 + 2x^2) = 33

17 + 2(4 + 2x^2) = 33

17 + 2(4) (2)( + 2x^2) = 33

17 + 8 + 4x^2= 33

25+ 4x^2= 33

25-25+ 4x^2= 33-25

4x^2=8

4x^2/4=8/4

x^2=2

sqrtx^2=sqrt8

x=2.83