Respuesta :

fieryanswererft

Answer:

8x²+38y

Explanation:

                     perimeter of rectangle: 2(Length + Width)

perimeter of this rectangle:

[tex]2((x + 10y) + (4x^2 -x + 9y))[/tex]

[tex]2\left(x+10y+4x^2-x+9y\right)[/tex]

[tex]2\left(4x^2+19y\right)[/tex]

[tex]8x^2+38y[/tex]

semsee45

Answer:

8x² + 38y

Step-by-step explanation:

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

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

⇒ Perimeter = 8x² + 38y

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