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algebraic expreesion which give perimeters of all rectangles with length 2 cm more than the breadth
Let breadth (b) be x
length (l) =  2 + x

Perimeter = 2 {l + b}
                = 2{ (2 + x) + x}
                = 2{2 + 2x}
                = 4 + 4x
                4 ( x + 1) 


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