Răspuns:
[tex]( {3}^{7} \times {5}^{12} )^{2} = {3}^{7 \times 2} \times {5}^{12 \times 2} = {3}^{14} \times {5}^{24} [/tex]
[tex]( {2}^{10} \times {3}^{7} )^{9} \div ( {2}^{5} \times {3}^{6} )^{10} = {2}^{10 \times 9 - 5 \times 10} \times {3}^{7 \times 9 - 6 \times 10} = {2}^{40} \times {3}^{3} [/tex]
