2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8 = ?
Is there any formula or tricks to approach this problem?
Is there any formula or tricks to approach this problem?
2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8 =
2(2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7)
2^2(2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6)
2^3(2 + 2 + 2^2 + 2^3 + 2^4 + 2^5)
2^4(2 + 2 + 2^2 + 2^3 + 2^4)
2^5(2 + 2 + 2^2 + 2^3)
2^6(2 + 2 + 2^2 )
2^7(2^2)
2^9
