Answer:
<h3>The answer after performing the indicated operation is in descending powers of x is

</h3>
Step-by-step explanation:
Given expression is 
<h3>To perform the operation indicated, then place the answer in the proper location on the grid and also Write answer in descending powers of x:</h3>
Now solve the given expression as below ( that is perform the operation indicated)


Adding the like terms we get


<h3>The answer after performing the indicated operation is in descending powers of x is

</h3>
The company that offers the best deal in my point of view is Cellphones usually they are old so they are going in less price. I think that is what you mean
The answer is <span>A –x^2 + 3x + 15
</span>
3x² + 6 – 2x + 5x – 4x²<span> + 9
Rearrange it:
</span>3x² + 6 – 2x + 5x – 4x² + 9
= 3x² - 4x² - 2x + 5x + 6 + 9
= -x² + 3x + 15