2+ 2^3 +2^5 +...+(2^2n-3) +(2^2n-1)=?

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2+2^3+2^5+...+(2^2n-3)+(2^2n-1)=?2+2^3+2^5+...+(2^2n-3)+(2^2n-1)=?2+2^3+2^5+...+(2^2n-3)+(2^2n-1)=?2

2+ 2^3 +2^5 +...+(2^2n-3) +(2^2n-1)=?
2+ 2^3 +2^5 +...+(2^2n-3) +(2^2n-1)=?

2+ 2^3 +2^5 +...+(2^2n-3) +(2^2n-1)=?
2+ 2^3 +2^5 +...+(2^2n-3) +(2^2n-1)=x
4[2+ 2^3 +2^5 +...+(2^2n-3) +(2^2n-1)]=4x=2^3 +2^5 +...+(2^2n-3) +(2^2n-1)+(2^2n+1)
3x=(2^2n+1)-2
x=2[(2^2n)-1]/3
2+ 2^3 +2^5 +...+(2^2n-3) +(2^2n-1)=2[(2^2n)-1]/3