Question

9³.27⁵/81³.3^{13. / là dấu gạch phân số}

Answer 1

9\(^3\) . \(\dfrac{27^5}{81^3}\) . 3\(^{13}\)

=9\(^3\) . \(\dfrac{\left(3^3\right)^5}{\left(3^4\right)^3}\) . 3\(^{13}\)

=(3\(^2\))\(^3\) . \(\dfrac{3^{15}}{3^{12}}\) . 3\(^{13}\)

= 3\(^6\) . 3\(^3\) . 3\(^{13}\)

=3\(^{6+3+13}\)

=3\(^{22}\)

Answer 2

\(\dfrac{9^3\cdot27^5}{81^3\cdot3^{13}}=\dfrac{\left(3^2\right)^3\cdot\left(3^3\right)^5}{\left(3^4\right)^3\cdot3^{13}}=\dfrac{3^{2\cdot3}\cdot3^{3\cdot5}}{3^{4\cdot3}\cdot3^{13}}=\dfrac{3^6\cdot3^{15}}{3^{12}\cdot3^{13}}=\dfrac{3^{21}}{3^{25}}=\dfrac{1}{3^4}=\dfrac{1}{81}\)

Answer 3

\(\dfrac{9^3\cdot27^5}{81^3\cdot3^{13}}=\)

=\(\dfrac{3^6\cdot3^{15}}{3^{12}\cdot3^{13}}\)

=\(\dfrac{3^{21}}{3^{25}}\)

=\(\dfrac{1}{3^4}\)

=\(\dfrac{1}{81}\)

sai thì thôi nhoa