Question

[Thuy Khuat]

Tìm x\(\in\)Z biết:

\(2\cdot2^2\cdot2^3\cdot2^4\cdot...\cdot2^x=1024\)

Answer 1

[Đặng Quốc Vinh]

\(2^1.2^2.2^3.....2^x=1024\Rightarrow2^{1+2+3+...+x}=2^{10}\)

\(\Rightarrow1+2+3+...+x=1024\Rightarrow x=4\)