Algo and Math

scomponi in fattori: 3a^3-2b^2+2a^2b-3ab

3a**3-2b**2+2a**2(b)-3ab
3a**3+2a**2(b)-3ab-2b**2
a**2(3a+2b)-b(3a+2b)
(a**2-b)(3a+2b)
a^2(3a+2b)-b(3a+2b), per cui (a^2-b)(3a+2b)
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