wolfgang7770 wolfgang7770
  • 04-05-2016
  • Mathematics
contestada

the length of a garden is 4 m longer than the width. if the area of the garden is 196m^2, find the width of the garden.

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Аноним Аноним
  • 12-05-2016
l = 4 + w 
w = w 
A = 196 m^2

A = lw
A= (4+w)w
196 = w^2 +4w

w^2 + 4w - 196 = 0

The quadratic roots (or zeros) of the function are 12 and -16. 

Since -16 does not make sense as a measure of width, then 12 is the answer. 


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