Problem: The set of solutions for the equation consists of:
Answer Choices:
A. two integers
B. one integer and one fraction
C. two irrational numbers
D. two non-real numbers
E. no numbers, that is, the set is empty.
Solution:
\log _{10}\left(\mathrm{a}^{2}-5 \mathrm{a}\right)=2 \quad \therefore 10^{2}=\mathrm{a}^{2}-15 \mathrm
or