if the area of the rectangle is 39 squared inches find the value of x

Question

if the area of the rectangle is 39 squared inches
find the value of x

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Neala 3 years 2021-08-26T06:08:55+00:00 1 Answers 9 views 0

Answers ( )

  1. thongdat2
    0
    2021-08-26T06:10:27+00:00
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    Answer:

    x = 5 inches

    Explanation:

    Given that,

    The area of a rectangle = 39 inch²

    The sides of the rectangle are (x-2) and (x+8).

    The area of a rectangle is given by :

    A = lb

    So,

    39=(x-2)(x+8)\\\\x^2+8x-2x-16=39\\\\x^2+8x-2x=55\\\\x=5\ in\ and\ x=-11\ in

    So, the value of x is equal to 5 inches.

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