2⁶ + 2⁶ = 2⁶(1 + 1) = 2⁶ₓ2 = 2⁽⁶⁺¹⁾ = 2⁷ = 128
[tex]\it 2^6+2^6=2\cdot2^6=2^7=128\\ \\ 2^6+2^6=64+64=128 [/tex]