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The length of a rectangular poster is 2 more inches than two times its width. The area of the poster is 84 square inches. Solve for the dimensions (length and width) of the poster.

User Bilobatum
by
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1 Answer

3 votes

Explanation:

w = width

2w + 2 = Length

Area = W x L = 84 = w (2w+2)

84 = 2w^2 + 2w

0 = 2w^2 + 2w - 84 Use Quadratic Formula

a = 2 b=2 c = -84

to find

W = 6 then L = 14 inches

User Olfek
by
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