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29 March, 08:14

length of a rectangle is 4x^2 + 12x and the area of the rectangle is 24x^4 + 72x^3 what is the width of the rectangle

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  1. 29 March, 08:53
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    Square Perimeter = 4 (4x-1)

    Rectangle Perimeter = 2 (2x+1) + 2 (x+2)

    Square Perimeter = Rectangle Perimeter

    4 (4x-1) = 2 (2x+1) + 2 (x+2)

    16x - 4 = 4x + 2 + 2x + 4

    16x - 4 = 6x + 6

    -6x + 4 - 6x + 4

    10x = 10

    x = 1
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