Asked by Jane
The swimming pool has the length of 5 units more than its width.if the area of the said pool measures 84 square units , find the dimensions of the pool
Answers
Answered by
mathhelper
width --- x
length ---- x+5
x(x+5) = 84
x^2 + 5x - 84 = 0
(x - 7)(x + 12) = 0
x = 7 or x = -12, but the width cannot be negative, so x = 7
the pool is 7 units by (7+5) or 12 units
check: area = 7*12 = 84
length ---- x+5
x(x+5) = 84
x^2 + 5x - 84 = 0
(x - 7)(x + 12) = 0
x = 7 or x = -12, but the width cannot be negative, so x = 7
the pool is 7 units by (7+5) or 12 units
check: area = 7*12 = 84
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