C(x)=0.9x^2+11x-400

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Solution for C(x)=0.9x^2+11x-400 equation:


Simplifying
C(x) = 0.9x2 + 11x + -400

Multiply C * x
xC = 0.9x2 + 11x + -400

Reorder the terms:
xC = -400 + 11x + 0.9x2

Solving
xC = -400 + 11x + 0.9x2

Solving for variable 'x'.

Reorder the terms:
400 + -11x + xC + -0.9x2 = -400 + 11x + 0.9x2 + 400 + -11x + -0.9x2

Reorder the terms:
400 + -11x + xC + -0.9x2 = -400 + 400 + 11x + -11x + 0.9x2 + -0.9x2

Combine like terms: -400 + 400 = 0
400 + -11x + xC + -0.9x2 = 0 + 11x + -11x + 0.9x2 + -0.9x2
400 + -11x + xC + -0.9x2 = 11x + -11x + 0.9x2 + -0.9x2

Combine like terms: 11x + -11x = 0
400 + -11x + xC + -0.9x2 = 0 + 0.9x2 + -0.9x2
400 + -11x + xC + -0.9x2 = 0.9x2 + -0.9x2

Combine like terms: 0.9x2 + -0.9x2 = 0.0
400 + -11x + xC + -0.9x2 = 0.0

The solution to this equation could not be determined.

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