0=-.002x^3+0.4x^2+9x+500

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Solution for 0=-.002x^3+0.4x^2+9x+500 equation: 


Simplifying
0 = -0.002x3 + 0.4x2 + 9x + 500

Reorder the terms:
0 = 500 + 9x + 0.4x2 + -0.002x3

Solving
0 = 500 + 9x + 0.4x2 + -0.002x3

Solving for variable 'x'.

Combine like terms: 0 + -500 = -500
-500 + -9x + -0.4x2 + 0.002x3 = 500 + 9x + 0.4x2 + -0.002x3 + -500 + -9x + -0.4x2 + 0.002x3

Reorder the terms:
-500 + -9x + -0.4x2 + 0.002x3 = 500 + -500 + 9x + -9x + 0.4x2 + -0.4x2 + -0.002x3 + 0.002x3

Combine like terms: 500 + -500 = 0
-500 + -9x + -0.4x2 + 0.002x3 = 0 + 9x + -9x + 0.4x2 + -0.4x2 + -0.002x3 + 0.002x3
-500 + -9x + -0.4x2 + 0.002x3 = 9x + -9x + 0.4x2 + -0.4x2 + -0.002x3 + 0.002x3

Combine like terms: 9x + -9x = 0
-500 + -9x + -0.4x2 + 0.002x3 = 0 + 0.4x2 + -0.4x2 + -0.002x3 + 0.002x3
-500 + -9x + -0.4x2 + 0.002x3 = 0.4x2 + -0.4x2 + -0.002x3 + 0.002x3

Combine like terms: 0.4x2 + -0.4x2 = 0.0
-500 + -9x + -0.4x2 + 0.002x3 = 0.0 + -0.002x3 + 0.002x3
-500 + -9x + -0.4x2 + 0.002x3 = -0.002x3 + 0.002x3

Combine like terms: -0.002x3 + 0.002x3 = 0.000
-500 + -9x + -0.4x2 + 0.002x3 = 0.000

The solution to this equation could not be determined.

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