SOLUTION: the area of a rectangle is x^2+6x+8 square units. if the length is x+4 units, find an algebraic expression for the perimeter

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Question 975076: the area of a rectangle is x^2+6x+8 square units. if the length is x+4 units, find an algebraic expression for the perimeter

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
x^2+6x+8 factors to (x+4)(x+2)

The length is x+4
The width is x+2

Perimeter:

P = 2*(L+W)
P = 2*(x+4+x+2)
P = 2*(2x+6)
P = 4x+12

The expression for the perimeter is 4x+12

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