Question

(2a-6)^2-3a(4-2a) Ребят, очень срочно. Упростить...

Answer 1

(2a-6)²-3a(4-2a)=4a²-2*2a*6+36-12a+6a²=4a²-24a+36-12a+6a²=
=4a²+6a²-24a-12a+36=10a²-36a+36.

Answer 2

= 4a^2-24a+36-12a+6a^2=10a^2-36a+36

Answer 3

Simplifying the Expression (2a-6)^2-3a(4-2a)

To simplify the given expression (2a-6)^2-3a(4-2a), we can follow these steps:

1. Expand the squared term. 2. Distribute the terms in the expression.

Let's go through these steps:

1. Expand the squared term (2a-6)^2: - The squared term can be expanded using the formula (a-b)^2 = a^2 - 2ab + b^2. - In this case, a = 2a and b = 6.

The expansion of (2a-6)^2 is: ``` (2a-6)^2 = (2a)^2 - 2*(2a)*6 + (6)^2 = 4a^2 - 24a + 36 ```

2. Distribute the terms in the expression: - Now, we'll distribute the terms in the expression -3a(4-2a). ``` -3a(4-2a) = -3a*4 + 3a*2a = -12a + 6a^2 ```

Now, we can combine the results of the expanded squared term and the distributed terms.

The simplified expression is: ``` (2a-6)^2 - 3a(4-2a) = 4a^2 - 24a + 36 - 12a + 6a^2 = 10a^2 - 36a + 36 ```

So, the simplified form of the given expression (2a-6)^2-3a(4-2a) is 10a^2 - 36a + 36.