a)
[tex] {5}^{7} . {5}^{2} = {5}^{9} [/tex]
b)
[tex]a. \: {a}^{4} .a \: = {a}^{6} [/tex]
c)
[tex]7. {7}^{3} .49 = 7. {7}^{3} . {7}^{2} = {7}^{6} [/tex]
d)
[tex] {7}^{10} \div {7}^{4} = {7}^{6} [/tex]
e)
[tex] {3}^{2} \div {3}^{ - 5} = {3}^{ - 3} [/tex]
f)
[tex] {10}^{6} \div {10}^{3 } \div 10 = {10}^{2} [/tex]
