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Simplify:
$(i)$. $\frac{(2^5)^2\times7^3}{8^3\times7}$
$(ii)$. $\frac{25\times5^2\times t^8}{10^3\times t^4}$
$(iii)$. $\frac{3^5\times10^5\times25}{5^7\times6^5}$
Given:
$(i)$. $\frac{(2^5)^2\times7^3}{8^3\times7}$
$(ii)$. $\frac{25\times5^2\times t^8}{10^3\times t^4}$
$(iii)$. $\frac{3^5\times10^5\times25}{5^7\times6^5}$
To do: To simplify each of the above expressions.
Solution:
$(i)$. $\frac{(2^5)^2\times7^3}{8^3\times7}$$=\frac{(2^{5})^2\times7^3}{(2^3)^3\times7}$
$=\frac{2^{10}\times7^3}{2^9\times7}$
$=(2^{10-9})\times(7^{3-1})$
$=2^1\times7^2$
$=2\times49$
$=98$
$(ii)$. $\frac{25\times5^2\times t^8}{10^3\times t^4}$
$=\frac{5^2\times5^2\times t^8}{(5\times2)^3\times t^4}$
$=\frac{5^{2+2}\times t^{8-4}}{5^3\times2^3}$
$=\frac{5^{4-3}\times t^4}{2^3}$
$=\frac{5^1\times t^4}{8}$
$=\frac{5t^4}{8}$
$(iii)$. $\frac{3^5\times10^5\times25}{5^7\times6^5}$
$=\frac{3^5(2\times5)^5\times5^2}{5^7\times(2\times3)^5}$
$=\frac{(3^5\times2^5\times5^{5+2})}{5^7\times2^5\times3^5}$
$=\frac{3^5\times2^5\times5^7}{5^7\times2^5\times3^5}$
$=2^0\times3^0\times5^0$
$=1\times1\times1$
$=1$
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