Come consideri il fattore 27x ^ 3 - 8 #?
Risposta:
(3x−2)(9x2+6x+4)
Spiegazione:
27x3−8 is a difference of cubes
∙xa3−b3=(a−b)(a2+ab+b2)
here a=3x→(3x)3=27x3
and b=2→(2)3=8
⇒27x3−8=(3x−2)(9x2+6x+4)
(3x−2)(9x2+6x+4)
27x3−8 is a difference of cubes
∙xa3−b3=(a−b)(a2+ab+b2)
here a=3x→(3x)3=27x3
and b=2→(2)3=8
⇒27x3−8=(3x−2)(9x2+6x+4)