C(d)=0.04d^3-0.65d^2+3.5d+9

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Solution for C(d)=0.04d^3-0.65d^2+3.5d+9 equation: 


Simplifying
C(d) = 0.04d3 + -0.65d2 + 3.5d + 9

Multiply C * d
dC = 0.04d3 + -0.65d2 + 3.5d + 9

Reorder the terms:
dC = 9 + 3.5d + -0.65d2 + 0.04d3

Solving
dC = 9 + 3.5d + -0.65d2 + 0.04d3

Solving for variable 'd'.

Reorder the terms:
-9 + -3.5d + dC + 0.65d2 + -0.04d3 = 9 + 3.5d + -0.65d2 + 0.04d3 + -9 + -3.5d + 0.65d2 + -0.04d3

Reorder the terms:
-9 + -3.5d + dC + 0.65d2 + -0.04d3 = 9 + -9 + 3.5d + -3.5d + -0.65d2 + 0.65d2 + 0.04d3 + -0.04d3

Combine like terms: 9 + -9 = 0
-9 + -3.5d + dC + 0.65d2 + -0.04d3 = 0 + 3.5d + -3.5d + -0.65d2 + 0.65d2 + 0.04d3 + -0.04d3
-9 + -3.5d + dC + 0.65d2 + -0.04d3 = 3.5d + -3.5d + -0.65d2 + 0.65d2 + 0.04d3 + -0.04d3

Combine like terms: 3.5d + -3.5d = 0.0
-9 + -3.5d + dC + 0.65d2 + -0.04d3 = 0.0 + -0.65d2 + 0.65d2 + 0.04d3 + -0.04d3
-9 + -3.5d + dC + 0.65d2 + -0.04d3 = -0.65d2 + 0.65d2 + 0.04d3 + -0.04d3

Combine like terms: -0.65d2 + 0.65d2 = 0.00
-9 + -3.5d + dC + 0.65d2 + -0.04d3 = 0.00 + 0.04d3 + -0.04d3
-9 + -3.5d + dC + 0.65d2 + -0.04d3 = 0.04d3 + -0.04d3

Combine like terms: 0.04d3 + -0.04d3 = 0.00
-9 + -3.5d + dC + 0.65d2 + -0.04d3 = 0.00

The solution to this equation could not be determined.

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