Răspuns:
b)
[tex] ({2}^{6} ) ^{2} \div {2}^{9} = {2}^{12} \div {2}^{9} = {2}^{12 - 9} = {12}^{3} [/tex]
c)
[tex] ({15}^{3} \times {15}^{7}) \div {15}^{9} = {15}^{3 + 7} \div {15}^{9} = {15}^{10} \div {15}^{9} = {15}^{10 - 9} = {15}^{1} = 15[/tex]
d)
[tex] ({3}^{2}) ^{5} \div ( {3}^{4} \times {3}^{3} ) = {3}^{10} \div {3}^{7} = {3}^{3} = 27[/tex]
a) 5(3)•4(3)=20(3)
