Question

Using an algebraic formula, find the value of 8 - 9a + 27a²-27a³, when a = 2​

Answer 1

Step-by-step explanation:

8-9(2)+27(2)²-27(2)³

8-18+108-216

116-234

-118

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Answer 2

Step-by-step explanation:

$- 27(a {)}^{3} + 27( {a)}^{2} - 9a \: + 8$

$- 27(2) {}^{3} + 27(2) {}^{2} - 9(2) + 8$

$- 216 + 108 - 18 + 8$

$- 118$

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