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3 August, 23:03

Suppose a2 + 4a + 3 represents the area of a rectangle. What is the perimeter of that rectangle? A) 2a + 4 B) 4a + 8 C) 6a + 12 D) 8a + 16

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  1. 4 August, 01:53
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    A² + 4a + 3

    (a+3) (a+1) This is the length and the width of the rectangle.

    Perimeter = length + length + width + width

    P = (a+3) + (a+3) + (a+1) + (a+1)

    P = a + a + a + a + 3 + 3 + 1 + 1

    P = 4a + 6 + 2

    P = 4a + 8

    B) 4a + 8
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