Question

(9y^2-5y+7)-(3y^2+2y-1)*3

Answer 1

Ответ:

(9y^2 - 5y + 7) -9y^2 -6y +3 = - 11y +10

Объяснение:

Answer 2

To simplify the expression (9y^2 - 5y + 7) - (3y^2 + 2y - 1) * 3, you'll first need to distribute the 3 on the right side of the subtraction:

= 9y^2 - 5y + 7 - (3 * 3y^2 + 3 * 2y - 3 * (-1))

Now, multiply each term inside the parentheses by 3:

= 9y^2 - 5y + 7 - (9y^2 + 6y + 3)

Now, distribute the negative sign inside the parentheses:

= 9y^2 - 5y + 7 - 9y^2 - 6y - 3

Next, combine like terms:

(9y^2 - 9y^2) + (-5y - 6y) + (7 - 3)

The terms with y^2 cancel each other out, and the terms with y can be combined:

0y^2 - 11y + 4

Since the coefficient of the y^2 term is 0, the expression simplifies to:

-11y + 4

So, the simplified expression is:

-11y + 4