(a^2+a-6)(a-1)-(a^3+3a^2-22a-24)-15a+3a^2
a^3-a^2+a^2-a-6a+6-a^3-3a^2+22a+24-15a+3a^2
a(+22-(7+15)+30
a*0+30
30
===============================================================
(a+3)(a−2)(a−1)−(a+6)(a2−3a−4)−3a(5−a)=
=(a2−2a+3a−6)(a−1)−(a3−3a2−4a+6a2−18a−24)−15a+3a2=
=(a2+a−6)(a−1)−(a3+3a2−22a−24)−15a+3a2=
=a3−a2+a2−a−6a+6−a3−3a2+22a+24−15a+3a2=
=(−1−6+22−15)a+30=
=0a+30=
=30
@gramor
@remanzini_rinaldo - Grazie Rinaldo, buona giornata.
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