P(x)=-0.002x^2+1.4x-400

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Solution for P(x)=-0.002x^2+1.4x-400 equation: 


Simplifying
P(x) = -0.002x2 + 1.4x + -400

Multiply P * x
xP = -0.002x2 + 1.4x + -400

Reorder the terms:
xP = -400 + 1.4x + -0.002x2

Solving
xP = -400 + 1.4x + -0.002x2

Solving for variable 'x'.

Reorder the terms:
400 + -1.4x + xP + 0.002x2 = -400 + 1.4x + -0.002x2 + 400 + -1.4x + 0.002x2

Reorder the terms:
400 + -1.4x + xP + 0.002x2 = -400 + 400 + 1.4x + -1.4x + -0.002x2 + 0.002x2

Combine like terms: -400 + 400 = 0
400 + -1.4x + xP + 0.002x2 = 0 + 1.4x + -1.4x + -0.002x2 + 0.002x2
400 + -1.4x + xP + 0.002x2 = 1.4x + -1.4x + -0.002x2 + 0.002x2

Combine like terms: 1.4x + -1.4x = 0.0
400 + -1.4x + xP + 0.002x2 = 0.0 + -0.002x2 + 0.002x2
400 + -1.4x + xP + 0.002x2 = -0.002x2 + 0.002x2

Combine like terms: -0.002x2 + 0.002x2 = 0.000
400 + -1.4x + xP + 0.002x2 = 0.000

The solution to this equation could not be determined.

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