tmua None Q8

tmua · Uk · specimen_paper1 Laws of Logarithms Solve a Logarithmic Equation
8. Given that $a ^ { x } b ^ { 2 x } c ^ { 3 x } = 2$, where $a , b$, and $c$ are positive real numbers, then $x =$
A $\quad \log _ { 10 } \left( \frac { 2 } { a + 2 b + 3 c } \right)$
B $\frac { \log _ { 10 } 2 } { \log _ { 10 } ( a + 2 b + 3 c ) }$
C $\quad \frac { 2 } { \log _ { 10 } ( a + 2 b + 3 c ) }$
D $\frac { 2 } { a + 2 b + 3 c }$
E $\quad \log _ { 10 } \left( \frac { 2 } { a b ^ { 2 } c ^ { 3 } } \right)$ F $\quad \frac { \log _ { 10 } 2 } { \log _ { 10 } \left( a b ^ { 2 } c ^ { 3 } \right) }$ G $\quad \frac { 2 } { \log _ { 10 } \left( a b ^ { 2 } c ^ { 3 } \right) }$ H $\frac { 2 } { a b ^ { 2 } c ^ { 3 } }$
8. Given that $a ^ { x } b ^ { 2 x } c ^ { 3 x } = 2$, where $a , b$, and $c$ are positive real numbers, then $x =$

A $\quad \log _ { 10 } \left( \frac { 2 } { a + 2 b + 3 c } \right)$\\
B $\frac { \log _ { 10 } 2 } { \log _ { 10 } ( a + 2 b + 3 c ) }$\\
C $\quad \frac { 2 } { \log _ { 10 } ( a + 2 b + 3 c ) }$\\
D $\frac { 2 } { a + 2 b + 3 c }$\\
E $\quad \log _ { 10 } \left( \frac { 2 } { a b ^ { 2 } c ^ { 3 } } \right)$\\
F $\quad \frac { \log _ { 10 } 2 } { \log _ { 10 } \left( a b ^ { 2 } c ^ { 3 } \right) }$\\
G $\quad \frac { 2 } { \log _ { 10 } \left( a b ^ { 2 } c ^ { 3 } \right) }$\\
H $\frac { 2 } { a b ^ { 2 } c ^ { 3 } }$\\