The only rational root is -2.336071261738453
The other roots are complex (imaginary).
New balance
2,103.23+(2,103.23×0.144)+390
=2,796.095
<E = 180 - 14 - 45 = 121
so
<D = 180 - 27 - 121 = 32
answer
<D = 32
Let the width be "x" cm.
Then the length is "x+12" cm
And the area = x(x+12) = x^2+12x cm^2
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Change the dimensions:
width = "x-2" cm
length = "x+10" cm
New area = (x-2)(x+10) = x^2 + 8x - 20 cm^2
------------------
Equations :
Old area - New area = 108 cm^2
x^2+12x -(x^2 + 8x - 20) = 108
4x + 20 = 108
4x = 88
x = 22 cm (original width)
x+12 = 24 cm (original length)
