a rectangle is 3 feet longer than it is wide. If the area is 4 square feet, find its dimensions

Answer 1

width = w

length = w+3

area = length * width

4 = (w+3)(w)

4= w2+3w

w2+3w-4=0

(w+4)(w-1)=0

w=-4 or w=1

so width = 1 feet

length= 1+3 =4 feet

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Answer 2