Răspuns:
[tex] {15}^{3} = (3 \times 5)^{3} = {3}^{3} \times {5}^{3} [/tex]
[tex] {121}^{4} = ( {11}^{2} )^{4} = {11}^{2 \times 4} = {11}^{8} [/tex]
[tex] {90}^{2} = (2 \times {3}^{2} \times 5)^{2} = {2}^{2} \times {3}^{4} \times {5}^{2} [/tex]
[tex](4 \times 5)^{3} = ( {2}^{2} )^{2} \times {5}^{3} = {2}^{4} \times {5}^{3} [/tex]
[tex](4 \times 25)^{3} = (2^{2} )^{3} \times ( {5}^{2} )^{3} = {2}^{6} \times {5}^{6} [/tex]
