matthewpascaretti matthewpascaretti

26-04-2021
Mathematics

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Аноним Аноним

26-04-2021

Answer:

because the length is 4 feet more than the width

=> the length is x + 4 (feet)

because the base has an area of 21 square feet

=> x(x + 4) = 21

<=> x² + 4x = 21

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