Question

Упростите выражение 1) a(a+b)-b(a+b) 3) 3 (2x+y)-3(4x-3y)+5(2x-5)​

Answer 1

Ответ:

1)a(a+b)-b(a+b)=(a+b)(a-b)

3)хз

Answer 2

1. a(a+b) - b(a+b)

We can simplify this expression by factoring out the common factor (a+b) from both terms:

a(a+b) - b(a+b) = (a+b)(a) - (a+b)(b)

Now, we can further simplify by distributing (a+b) to both terms:

= a(a+b) - b(a+b) = a^2 + ab - ab - b^2

The middle terms, ab and -ab, cancel each other out:

= a^2 - b^2

So the simplified expression is a^2 - b^2.

2. 3(2x+y) - 3(4x-3y) + 5(2x-5)

Let's simplify this expression step by step:

= 6x + 3y - 12x + 9y + 10x - 25

Now, let's combine like terms:

= (6x - 12x + 10x) + (3y + 9y) - 25

= -6x + 12y - 25

So the simplified expression is -6x + 12y - 25.