oblicz Dawid: Oblicz: 2^x+2^x-1+2^x-2≤28 x∈N oraz: log₃(2x-3)<2 x∈C

Kali: 1) 2^x +2^x*(1/2) + 2^x*(1/4) ≤ 28 (7/4)*2^x ≤ 28 2^x ≤ 28*(4/7) 2^x ≤ 16 2^x ≤ 2⁴ x≤ 4 x≤ 4 i x€N to x =4 x= 3 x= 2 x= 1 2) zał; 2x - 3 >0 x > 3/2 z def. log. 3² < 2x - 3 2x - 3 > 9 2x > 12 x >6 x>6 i x€ C x={ 7, 8, 9, 10, 11, ......... }