Question

3а(а+1)+(а+2)(а-3) (y-3)(5-y)-(4-y)(y+6) помогите пжппжпжжп

Answer 1

Ответ:

Объяснение:

3а(а+1)+(а+2)(а-3) =3а²+3а+а²-3а+2а-6=

4а²+2а-6

(y-3)(5-y)-(4-y)(y+6)=5у-у²-15+3у-4у-24

+у²+6у=10у-39

Answer 2

Ответ:

Объяснение:

3а(а+1)+(а+2)(а-3)=

=3а^2+3+а^2+2а-3а-6=

=4а^2-а-3

(у-3)(5-у)-(4-у)(у+6)=

=5у-15+3у-у^2-4у+у^2-24+6у=

=10у-39

Answer 3

Solving the Expression

Let's solve the given expression step by step.

The given expression is: 3a(a+1) + (a+2)(a-3) + (y-3)(5-y) - (4-y)(y+6)

Step 1: Expand the Terms

First, we expand each term in the expression.

- 3a(a+1) expands to 3a^2 + 3a - (a+2)(a-3) expands to a^2 - 3a + 2a - 6, which simplifies to a^2 - a - 6 - (y-3)(5-y) expands to 5y - y^2 - 15 + 3y, which simplifies to -y^2 + 8y - 15 - (4-y)(y+6) expands to 4y + 24 - y^2 - 6y, which simplifies to -y^2 - 2y + 24

Step 2: Combine Like Terms

Next, we combine the like terms in the expression.

Combining the terms, the expression becomes: 3a^2 + 3a + a^2 - a - 6 - y^2 + 8y - 15 - y^2 - 2y + 24

Step 3: Simplify the Expression

Now, we simplify the expression by combining the like terms further.

Combining the like terms, the expression simplifies to: 4a^2 + a - 2y - 17

So, the simplified form of the given expression is 4a^2 + a - 2y - 17.

I hope this helps! If you have any more questions or need further assistance, feel free to ask.