A rectangle has a width of x and a length of 2x^3-3x+4. What is the polynomial that models the perimeter of the rectangle

Answer 1

From 4th grade math, the perimeter of a rectangle is:

Perimeter = 2·Length + 2·Width

Perimeter = 2(2x³ - 3x + 4) + 2x

Multiply it out then combine like-terms

Answer 2

2(x + 2x³ - 3x + 4)