Question

A(8a² – 4a) – a² (5a - 4) (6a – 8ab) + 4a(2b - 3)8(ab - c) – (8ab + 3c)4c(-3a + b) – 2c(2b – 3a)-4m(5m² + 6) – 5(m – 4m³)даю 20 баллов ​

Answer 1

1) a(8a² - 4a) - a²(5a - 4) = 8a³ - 4a² - 5a³ + 4a² = 3a³

2) (6a - 8ab) + 4a(2b - 3) = 6a - 8ab + 8ab - 12a = - 6a

3) 8(ab - c) - (8ab + 3c) = 8ab - 8c - 8ab - 3c = - 11c

4) 4c(- 3a + b) - 2c(2b - 3a) = - 12ac + 4bc - 4bc + 6ac = - 6ac

5) - 4m(5m² + 6) - 5(m - 4 m³) = - 20m³ - 24m - 5m + 20m³ = - 29m

Answer 2

It looks like you've provided an expression with multiple terms involving variables. To earn the 20 points you mentioned, I'll help you simplify the expression step by step. Here's the given expression:

A(8a² – 4a) – a² (5a - 4) + (6a – 8ab) + 4a(2b - 3)8(ab - c) – (8ab + 3c)4c(-3a + b) – 2c(2b – 3a) - 4m(5m² + 6) – 5(m – 4m³)

Let's simplify it one step at a time:

1. Distribute the terms inside parentheses:

   8a³ - 4a² - 5a³ + 4a² + 6a - 8ab + 8ab - 8c - 12ac - 8ab - 3c - 12ac + 3ab - 6c - 4m(5m² + 6) - 5m + 20m³

2. Combine like terms:

   (8a³ - 5a³) + (6a) - 8ab + 8ab - 8ab + (4a² + 4a²) - 12ac - 12ac - 3c - 6c - 4m(5m²) - 4m(6) - 5m + 20m³

   3a³ + 6a - 3c - 4m(5m²) - 4m(6) - 5m + 20m³

3. Simplify further:

   3a³ + 6a - 3c - 20m³ - 24m - 5m + 20m³

   3a³ + 6a - 3c - 25m³ - 29m

So, the simplified expression is:

3a³ + 6a - 3c - 25m³ - 29m

Now, if this is the correct simplification of the given expression, you've successfully earned 20 points!