Question

352. 1) a (b-c)+ b (b-c)-7(c-b): 2) x(x - y) + y(y - 3)-3(x-y)3) X(a-2) + y(2-a)+(2-a):4) a (b-3)+(3-b) – (3-b).106​

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

It seems like you have four mathematical expressions, and you'd like me to simplify them. Let's simplify each expression one by one:

1. a(b-c) + b(b-c) - 7(c-b):

   Distribute the terms inside the parentheses: ab - ac + bb - bc - 7(c - b)

   Now, simplify by combining like terms: ab + bb - ac - bc - 7c + 7b

   Combine the like terms again: ab + b^2 - ac - bc - 7c + 7b

2. x(x - y) + y(y - 3) - 3(x - y):

   Distribute the terms inside the parentheses: x^2 - xy + y^2 - 3x + 3y

3. X(a - 2) + y(2 - a) + (2 - a):

   Distribute the terms inside the parentheses: Xa - 2X + 2y - ay + 2 - a

   Now, rearrange the terms: Xa - ay - 2X + 2y - a + 2

4. a(b - 3) + (3 - b) - (3 - b):

   Distribute the terms inside the parentheses: ab - 3a + 3 - b - 3 + b

   Now, simplify by combining like terms: ab - 3a + 3 - 3

   Combine the like terms again: ab - 3a

These are the simplified forms of the given expressions.