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(3/7)^11×(9/49)^3÷(3/7)^15 . calculati ​

Răspuns :

[tex] {( \frac{3}{7} )}^{11} \times {( \frac{9}{49} )}^{3} \div {( \frac{3}{7} )}^{15} [/tex]

[tex] = {( \frac{3}{7} )}^{11} \times {( \frac{ {3}^{2} }{ {7}^{2} }) }^{3} \div {( \frac{3}{7} )}^{15} [/tex]

[tex] = {( \frac{3}{7}) }^{11} \times { [ {( \frac{3}{7} )}^{2} ]}^{3} \div {( \frac{3}{7} )}^{15} [/tex]

[tex] = {( \frac{3}{7} )}^{11} \times {( \frac{3}{7}) }^{2 \times 3} \div {( \frac{3}{7} )}^{15} [/tex]

[tex] = {( \frac{3}{7}) }^{11} \times {( \frac{3}{7} )}^{6} \div {( \frac{3}{7} )}^{15} [/tex]

[tex] = {( \frac{3}{7} )}^{11 + 6 - 15} = {( \frac{3}{7}) }^{17 - 15} [/tex]

[tex]={( \frac{3}{7} )}^{2}
=\frac{{3}^{2}}{{7}^{2}}=\frac{9}{49}[/tex]