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Mathematics, 24.03.2021 17:00 Seaport

A rectangle has side lengths of 3x2 + 5x – 1 and–7x+1. Which of the following expressions represents the area of the rectangle?
a 3x2 – 2x
b. 3x2 – 35x - 1
c -2177 - 38x2 – 2x - 1
d. -21x1 - 32x2 + 12x – 1

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