Question

1) 5(3-2a)+7(3a-1) 2) 3(2x-8)-3(2x-5) 3) 3m(m-2)-5m(7-m) 4) 2a²(3a-5)+4a²(a+3)

Answer 1

Если задание звучало как "упростить выражения", то ответ такой

Answer 2

Let's simplify each expression step by step:

1. 5(3-2a) + 7(3a-1)

First, distribute the multiplication: = 15 - 10a + 21a - 7

Combine like terms: = (15 - 7) + (21a - 10a) = 8 + 11a

The simplified expression is 8 + 11a.

2. 3(2x-8) - 3(2x-5)

Again, distribute the multiplication: = 6x - 24 - 6x + 15

Combine like terms: = (6x - 6x) + (-24 + 15) = 0 - 9 = -9

The simplified expression is -9.

3. 3m(m-2) - 5m(7-m)

Start by distributing the multiplication: = 3m² - 6m - 35m + 5m²

Combine like terms: = (3m² + 5m²) + (-6m - 35m) = 8m² - 41m

The simplified expression is 8m² - 41m.

4. 2a²(3a-5) + 4a²(a+3)

Distribute the multiplication: = 6a³ - 10a² + 4a³ + 12a²

Combine like terms: = (6a³ + 4a³) + (-10a² + 12a²) = 10a³ + 2a²

The simplified expression is 10a³ + 2a².

I hope this helps! Let me know if you have any further questions.