x^2+.69x(2-2x)+c=0

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Solution for x^2+.69x(2-2x)+c=0 equation: 


Simplifying
x2 + 0.69x(2 + -2x) + c = 0
x2 + (2 * 0.69x + -2x * 0.69x) + c = 0
x2 + (1.38x + -1.38x2) + c = 0

Reorder the terms:
c + 1.38x + x2 + -1.38x2 = 0

Combine like terms: x2 + -1.38x2 = -0.38x2
c + 1.38x + -0.38x2 = 0

Solving
c + 1.38x + -0.38x2 = 0

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '-1.38x' to each side of the equation.
c + 1.38x + -1.38x + -0.38x2 = 0 + -1.38x

Combine like terms: 1.38x + -1.38x = 0.00
c + 0.00 + -0.38x2 = 0 + -1.38x
c + -0.38x2 = 0 + -1.38x
Remove the zero:
c + -0.38x2 = -1.38x

Add '0.38x2' to each side of the equation.
c + -0.38x2 + 0.38x2 = -1.38x + 0.38x2

Combine like terms: -0.38x2 + 0.38x2 = 0.00
c + 0.00 = -1.38x + 0.38x2
c = -1.38x + 0.38x2

Simplifying
c = -1.38x + 0.38x2

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