Question

Which of the following represents the area of a rectangle whose length is x - 7 and whose width is x + 12?

Answer 1

Length of rectangle = x - 7

Width of rectangle = x + 12

We have to find area of rectangle
`.`

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`:\implies\sf\:Area=Length* Width`

`:\implies\sf\:Area=(x-7)(x+12)`

`:\implies\sf\:Area=x^2+12x-7x-84`

`:\implies\bf\:Area=x^2+5x-84`