A cura di: Alfredo Bochicchio

$[(3/2a^3b)^2:(-3/4ab)]^2:(-2/3a^6b^2)+(5/2a^4-3a^3xx(-1/4a)$
$[(9/4a^6b^2):(-3/4ab)]^2:(-2/3a^6b^2)+(5/2a^4+3/4a^4)$
$[-3a^5b]^2:(-2/3a^6b^2)+13/4a^4$
$[9a^10b^2]:(-2/3a^6b^2)+13/4a^4$
$27/2a^4+13/4a^4$
$-41/4a^4$