Answer:
D
Step-by-step explanation:
The area of a rectangle is given by the formula:
So, we are given that the area is:
And the width is:
And we want to find the length. To do so, first substitute the expressions into the equation:
Thus, to find the length, divide by (x²+3):
So, factor the numerator:
From the first two terms, factor out a x^2.
From the third and fourth terms, factor out a 3:
Combine:
Putting this back:
Cancel:
And that's our answer :)
I believe it would be D.