Respuesta :

igoroleshko156

Step-by-step explanation:

Step 1:  Multiply them together to get the area

[tex]A = L * W[/tex]

[tex]A = (x + 4)(3x - 1)[/tex]

[tex]A = (x * 3x) + (x * -1) + (4 * 3x) + (4 * -1)[/tex]

[tex]A = 3x^2 - x + 12x - 4[/tex]

[tex]A = 3x^2 + 11x - 4[/tex]

Answer:  [tex]A = 3x^2 + 11x - 4[/tex]

amna04352

Answer:

3x² + 11x - 4

Step-by-step explanation:

Area = length × width

= (x+4)(3x-1)

= 3x² + 12x - x - 4

= 3x² + 11x - 4