Emmanuelamp1799 Emmanuelamp1799

12-10-2018
Mathematics

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Find the area of a rectangle with length (2x + 3) and width (x - 4). A) 2x2 - 11x - 12 B) 2x2 - 5x + 12 C) 2x2 + 11x + 12 D) 2x2 - 5x - 12

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jimrgrant1 jimrgrant1

12-10-2018

D

area of a rectangle = length × width

area = (2x + 3)(x - 4) ( expand using FOIL )

= 2x² - 8x + 3x - 12 = 2x² - 5x - 12 → D

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