Respuesta :

tonb

Answer:

6 y² - 20 y + 6

Step-by-step explanation:

Multiply step by step the terms inside the brackets:

3y * y

3y * -3

-1 * y

-1 * -3

add those up to get 3y² - 10 y + 3

multiply all terms of the result by 2

Answer:

6y^2 - 20y + 6.

Step-by-step explanation:

2(3y − 1)(y − 3)

= 2 [ 3y(y - 3) - 1(y - 3)]

= 2 (3y^2 - 9y - y + 3)

= 2(3y^2 - 10y + 3)

= 6y^2 - 20y + 6.

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