Question

The area of a rectangular piece of carpet is represented by the expression: 20n4 15n3 + 35n2. Ifthe width of the carpet is 5n2, which of the following could represent the length of the carpet?Remember! if A = L x W, then L = A/W.

Answer 1

Second choice: 4n^2 - 3n + 7

Step-by-step explanation:

We know that the area of a rectangle is given by

`A=w* L`

where w is the width and L is the length.

Now, in our case

`\begin{gathered} A=20n^2-15n^3+35n^2 \\ w=5n^2 \end{gathered}`

therefore, we have the equation