(- 3/2·c^3·d^5)^4·(+ 1/6·c^3·d^5)^4/(+ 1/4·c^3·d^5)^4=
=81·c^12·d^20/16·(c^12·d^20/1296)/(c^12·d^20/256)=
=c^24·d^40/256/(c^12·d^20/256) = c^12·d^20
Per la proprietà associativa, puoi compattare i prodotti numerici (-3/2)^4 ×(+1/6)^4: (1/4)^4 * i prodotti delle lettere (c3d5)^4 × (c3d5)^4 :(c3d5)^4 e quindi, utilizzando le proprietà delle potenze, fare (-3/2 ×1/6 : 1/4)^4 * (c3d5)^4+4-4 .
Avrai quindi (-1)^4 (c3d5)^4 = +1 c^12d^20
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$\left(-\dfrac{3}{2}c^3d^5\right)^4·\left(\dfrac{1}{6}c^3d^5\right)^4 : \left(\dfrac{1}{4}c^3d^5\right)^4 =$
$= \left[\left(-\dfrac{\cancel3^1}{2}·\dfrac{1}{\cancel6_2} : \dfrac{1}{4}\right)c^3d^5\right]^{4+\cancel4-\cancel4}=$
$= \left[\left(-\dfrac{1}{2}·\dfrac{1}{2}·4\right)c^3d^5\right]^4=$
$= \left[\left(-1\right)c^3d^5\right]^4=$
$= \left[-c^3d^5\right]^4=$
$= c^{3·4}·d^{5·4}=$
$= c^{12}d^{20}$