Respuesta :

abidemiokin

Answer:

[tex]7x^{2}-4x[/tex]

Step-by-step explanation:

Area of a rectangle is expressed as Length * Width

Given the length/height = x

width = 7x-4

Area of the rectangle = [tex]x(7x-4)[/tex]

On opening the bracket;

Area of the rectangle = [tex]7x^{2}-4x[/tex]