SOLUTION: A rectangular garden has an area of 120 square meters. The length of the garden is 7 meters more than the width. Find the length and width.

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Question 392515: A rectangular garden has an area of 120 square meters. The length of the garden is 7 meters more than the width. Find the length and width.
Answer by NancyLam(35) About Me  (Show Source):
You can put this solution on YOUR website!
area = 120
length is 7 more width
Let l= length,w=width
(write equation) A= l x w
(w+7)(W)=120
w^2+7w -120=0
(-8)(15)=-120
(-8)+15=7
factor
(x-8)(x+15)
x= 8 or x= -15
the measure can't negative then x= 8 it correct answer