Question
the length of a rectangular garden is 4m more than its width determine the gardens width if the area is 117m^2
Answers
bobpursley
w(w+4)=117
w^2+4w-117=0
w=(-4+-sqrt(16+4*117))/2
w=-2+-sqrt(4+117)=-2+11=9
length then is 13
w^2+4w-117=0
w=(-4+-sqrt(16+4*117))/2
w=-2+-sqrt(4+117)=-2+11=9
length then is 13
Reiny
width --- x
length --- x+4
solve for x
x(x+4) = 117
hint: the quadratic factors nicely.
length --- x+4
solve for x
x(x+4) = 117
hint: the quadratic factors nicely.