can Someone Answer This Please! The Question Is on the Attached Photograph Below: Thanks!

Answer:
[tex]a) \: \: {a}^{2} [/tex]
[tex]b) \: \: c[/tex]
Step-by-step explanation:
[tex]a) \: \: {a}^{5} \div {a}^{3} \\ = (a \times a \times a \times a \times a)(a \times a \times a) \\ = a \times a \\ = {a}^{2} [/tex]
[tex]b) \: \: \frac{ {c}^{4} }{ {c}^{3} } \\ \frac{(c \times c \times c \times c)}{(c \times c \times c)} \\ = c[/tex]