Discover new information and get your questions answered with IDNLearn.com. Explore thousands of verified answers from experts and find the solutions you need, no matter the topic.

Select the correct answer.

Which expression is equivalent to the given expression?

[tex](3y - 4)(2y + 7) + 11y - 9[/tex]

A. [tex]9y - 37[/tex]

B. [tex]6y^2 + 11y + 19[/tex]

C. [tex]16y - 6[/tex]

D. [tex]6y^2 + 24y - 37[/tex]


Sagot :

To determine which expression is equivalent to the given expression [tex]\((3y - 4)(2y + 7) + 11y - 9\)[/tex], let's go through the process of expanding and simplifying it step-by-step:

1. Distribute [tex]\((3y - 4)\)[/tex] across [tex]\((2y + 7)\)[/tex]:
[tex]\[ (3y - 4)(2y + 7) = (3y \cdot 2y) + (3y \cdot 7) + (-4 \cdot 2y) + (-4 \cdot 7) \][/tex]
This simplifies to:
[tex]\[ (3y \cdot 2y) + (3y \cdot 7) + (-4 \cdot 2y) + (-4 \cdot 7) = 6y^2 + 21y - 8y - 28 \][/tex]

2. Combine like terms within the result:
[tex]\[ 6y^2 + 21y - 8y - 28 = 6y^2 + 13y - 28 \][/tex]

3. Add the remaining terms [tex]\(11y - 9\)[/tex] to the simplified expression:
[tex]\[ 6y^2 + 13y - 28 + 11y - 9 \][/tex]

4. Combine like terms again:
[tex]\[ 6y^2 + (13y + 11y) - 28 - 9 = 6y^2 + 24y - 37 \][/tex]

Therefore, the expression equivalent to [tex]\((3y - 4)(2y + 7) + 11y - 9\)[/tex] is:

[tex]\[ 6y^2 + 24y - 37 \][/tex]

The correct answer is:
[tex]\[ \boxed{D. \ 6y^2 + 24y - 37} \][/tex]