The width of a rectangle measures (4d-8)(4d−8) centimeters, and its length measures (7d-3)(7d−3) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?

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step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!