A rectangular wooden board has area

MATHEMATICS · Single correct · AoPS · Mathematics · x Marks the Spot · x Marks the Spot

Problem

A rectangular wooden board has area 15x2+11x−14 cm215x^{2}+11x-14\,\text{cm}^2. If its width is 3x−2 cm3x-2\,\text{cm}, what is its length in centimetres? (a) 15x+715x+7 (b) 5x+75x+7 (c) 5x−75x-7 (d) 5x+45x+4

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