Question

Find the perimeter.

​(Simplify your answer. Do not​ factor.)

Answer 1

8x² + 38y

Step-by-step explanation:

Perimeter = 2(x + 10y) + 2(4x² - x + 9y)

⇒ Perimeter = 2x + 20y + 8x² - 2x + 18y

⇒ Perimeter = 8x² + 38y

Answer 2

8x²+38y

Step-by-step explanation:

perimeter of rectangle: 2(Length + Width)

perimeter of this rectangle:

`2((x + 10y) + (4x^2 -x + 9y))`

`2\left(x+10y+4x^2-x+9y\right)`

`2\left(4x^2+19y\right)`

`8x^2+38y`