Question

Раскройте скобки:а)c(2a+b)б)2a(3b+5)в)-с(4c+1)Помогииите пожалуйста

Answer 1

1) 2ac+cb
2) 6ab+10a
3)-4c^2-c

Answer 2

2ас+сб
6аб+10а
-4с^2-1с

Answer 3

a) (c(2a+b))

To expand the expression (c(2a+b)), we can use the distributive property, which states that multiplying a number by a sum is the same as multiplying the number by each term in the sum and then adding the results together.

So, let's apply the distributive property to the expression (c(2a+b)):

(c(2a+b)) = c * 2a + c * b

Simplifying further:

c * 2a = 2ac c * b = cb

Therefore, the expanded form of (c(2a+b)) is 2ac + cb.

b) 2a(3b+5)

To expand the expression 2a(3b+5), we can again use the distributive property:

2a(3b+5) = 2a * 3b + 2a * 5

Simplifying further:

2a * 3b = 6ab 2a * 5 = 10a

Therefore, the expanded form of 2a(3b+5) is 6ab + 10a.

c) -c(4c+1)

To expand the expression -c(4c+1), we can once again use the distributive property:

-c(4c+1) = -c * 4c - c * 1

Simplifying further:

-c * 4c = -4c^2 -c * 1 = -c

Therefore, the expanded form of -c(4c+1) is -4c^2 - c.

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