3. a) \( 6^{\log _{6} 0,125}= \) \( 4 \log _{4} 10-3= \)

Найди значение выражения \( a+\frac{3 d-a^{2}}{a} \) при \( a=-4 \) и \( d=78 \)

20. Solve the equation for \( x \). \[ \log _{x} 3=\frac{1}{2} \] \( x=9 \) (Type an integer or a simplified fraction.)

*15. Write the equation in equivalent exponential form. \[ \log _{16} 4=\frac{1}{2} \] The equivalent exponential form is \( 16^{\frac{1}{2}}=4 \). (Type an equation. Use integers or fractions for any numbers in the equation.)

*16. Solve the equation to four decimal places. \( 2.387^{12 t}=4 \) \( t \approx 0.0131 \)

3. The solution of the equation \( \left|x^{2}+1\right|\left(x^{2}+x+1\right)=0 \) is \( ( \)