Question

2) 0,2a2-(a2-4a + 1) - 0,4a(a3+ 12a2– 8a);

Answer 1

2,4a-1-7,6a в квадрате

Answer 2

Ответ:

0,4а - 6,8а

Объяснение:

0,2a2 ( a2-4a + 1 ) -0,4a ( a3 + 12a2-8a ) = 0,4a ( 1-2a ) 0,4a ( 19а ) = 0,4а - 0,8a * -7,6a- = 0,4а - 6,8а

Answer 3

Let's simplify the expression step by step:

1. Start with the given expression: 0.2a^2 - (a^2 - 4a + 1) - 0.4a(a^3 + 12a^2 - 8a)

2. Distribute the negative sign inside the second parentheses: 0.2a^2 - a^2 + 4a - 1 - 0.4a(a^3 + 12a^2 - 8a)

3. Combine like terms within each part of the expression:

   • For the first part, combine 0.2a^2 and -a^2: (0.2a^2 - a^2) = -0.8a^2

   • For the second part, combine 4a and -1: (4a - 1)

   • For the third part, distribute -0.4a into the terms inside the parentheses: -0.4a * a^3 = -0.4a^4 -0.4a * 12a^2 = -4.8a^3 -0.4a * (-8a) = 3.2a^2

4. Now, rewrite the expression with the simplified parts: -0.8a^2 + (4a - 1) - (-0.4a^4 - 4.8a^3 + 3.2a^2)

5. Distribute the negative sign in front of the third part: -0.8a^2 + 4a - 1 + 0.4a^4 + 4.8a^3 - 3.2a^2

6. Finally, combine like terms in the expression: 0.4a^4 + 4.8a^3 - 0.8a^2 - 3.2a^2 + 4a - 1

7. Combine the terms with the same exponent of 'a': 0.4a^4 + (4.8a^3) - (0.8a^2 + 3.2a^2) + 4a - 1

8. Further simplify by adding the coefficients of like terms: 0.4a^4 + 4a^3 - 4a^2 + 4a - 1

So, the simplified expression is: 0.4a^4 + 4a^3 - 4a^2 + 4a - 1