Question

3a (a -2) - (a -3)³=​

Answer 1

Ответ:

-a^3+12a^2-33a+27

Объяснение:

3a^2 - 6a- a^3 + 9a^2- 27a + 27 =-a^3 + 12a^2- 33a + 27

Answer 2

Let's simplify the expression step by step:

Given expression: 3a(a - 2) - (a - 3)³

Step 1: Distribute the 3a in the first term: 3a * a - 3a * 2 - (a - 3)³

Step 2: Simplify the first term: 3a² - 6a - (a - 3)³

Step 3: Expand the cube of the binomial (a - 3)³: (a - 3)³ = a³ - 3a² * 3 + 3a * 3² - 3³ = a³ - 9a² + 27a - 27

So, the expression becomes: 3a² - 6a - (a³ - 9a² + 27a - 27)

Step 4: Distribute the negative sign to each term inside the parentheses: 3a² - 6a - a³ + 9a² - 27a + 27

Step 5: Combine like terms:

• a³ + 3a² - 33a + 27

The simplified expression is: -a³ + 3a² - 33a + 27