Question

[Đỗ Diệp Anh]

tim x

\(2\cdot3^x=10\cdot3^{12}+8\cdot27^4\)

mk dang can gap giup mk nhe

Answer 1

[Phạm Tú Uyên]

\(2.3^x=10.3^{12}+8.27^4\)

\(\Rightarrow\)\(2.3^x=10.3^{12}+2^3.3^{12}\)

\(\Rightarrow\)\(2.3^x=3^{12}\left(10+8\right)\)

\(\Rightarrow\)\(2.3^x=3^{12}.18=3^{12}.2.3.3=3^{14}.2\)

Vậy x = 14