Question

me ajudem por favor!

Answer 1

$\(e)\;\dfrac{\left(a^3\right)^5\cdot a^4}{a^2\cdot a\cdot a^{10}}=\;\dfrac{a^{15}\cdot a^4}{a^2\cdot a\cdot a^{10}}=\;\dfrac{a^{19}}{a^{13}}=a^{19-13}=\boxed{a^6}\)\\\\5\ª Se \(x=5^4\;,y=5^3\; e \;z=5^6\) reduza ...$

$\(a) \; x\cdot y = 5^4\cdot 5^3=5^{4+3}=\boxed{5^{7}}\\b) \; x\cdot z = 5^4\cdot 5^6=5^{4+6}=\boxed{5^{10}}\\\\c)\; \dfrac{y.z}{x}=\dfrac{5^3\cdot 5^6}{5^4}=\dfrac{5^{6+3}}{5^4}=\dfrac{5^9}{5^4}=5^{9-4}=\boxed{5^5}\\\d)\; \dfrac{x^3.z}{y^5}=\dfrac{(5^4)^3\cdot 5^6}{(5^3)^5}=\dfrac{5^{12}\times 5^6}{5^{15}}=\dfrac{5^{18}}{5^{15}}=5^{18-15}=\boxed{5^3}\)$

Espero ter sido útil