Question

1) 4(a+2)= 2) 3(m-5)= 3) (p-q)•9= 4) 12(а+b)= 5) 5(2m-1)= 6) (3с+5d)•14= Пр. 4а•3b=(4•3)=12•ab=12ab

Answer 1

1)4а+8=a+2
2)3m-15=m-5
3)9p-9q=p-q
4)12a+12b=a+b
5)10m-5=m-0.5
6)42c+70d=6c+10d

Answer 2

1) 4(a+2)= 4a+2

2) 3(m-5)= 3m-15

3) (p-q)•9= 9p-9q

4) 12(а+b)= 12a+12b

5) 5(2m-1)= 10m-5

6) (3с+5d)•14=42c+70d

Answer 3

Let's simplify the given expressions step-by-step:

1. 4(a + 2) To simplify this expression, distribute the 4 into the parentheses: 4 * a + 4 * 2 = 4a + 8

2. 3(m - 5) Again, distribute the 3 into the parentheses: 3 * m - 3 * 5 = 3m - 15

3. (p - q) • 9 This expression is already simplified. We cannot further simplify it without knowing the specific values of 'p' and 'q'.

4. 12(a + b) Distribute the 12 into the parentheses: 12 * a + 12 * b = 12a + 12b

5. 5(2m - 1) Distribute the 5 into the parentheses: 5 * 2m - 5 * 1 = 10m - 5

6. (3c + 5d) • 14 Distribute the 14 into the parentheses: 14 * 3c + 14 * 5d = 42c + 70d

Now let's look at the example you provided:

Example: 4a • 3b You correctly simplified this expression as 12ab.

If you have any other expressions you'd like to simplify or if you need further explanations, feel free to ask!