Respuesta :
Answer:
3x(x – 3)(x2 + 3x + 9)
Step-by-step explanation:
Because 3x4 – 81x=3x4-3x3
and the formula is
a3-b3=(a-b)(a2+ab+b2)
but since here it is 3x4 we put 3x before the formula.
Answer:
The answer is B: 3x(x – 3)(x2 + 3x + 9)
Step-by-step explanation:
You first do the x method.
Then find a&c
after find b
Hope this helps
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