225+40x+2x*x=0

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Solution for 225+40x+2x*x=0 equation:


Simplifying
225 + 40x + 2x * x = 0

Multiply x * x
225 + 40x + 2x2 = 0

Solving
225 + 40x + 2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
112.5 + 20x + x2 = 0

Move the constant term to the right:

Add '-112.5' to each side of the equation.
112.5 + 20x + -112.5 + x2 = 0 + -112.5

Reorder the terms:
112.5 + -112.5 + 20x + x2 = 0 + -112.5

Combine like terms: 112.5 + -112.5 = 0.0
0.0 + 20x + x2 = 0 + -112.5
20x + x2 = 0 + -112.5

Combine like terms: 0 + -112.5 = -112.5
20x + x2 = -112.5

The x term is 20x.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20x + 100 + x2 = -112.5 + 100

Reorder the terms:
100 + 20x + x2 = -112.5 + 100

Combine like terms: -112.5 + 100 = -12.5
100 + 20x + x2 = -12.5

Factor a perfect square on the left side:
(x + 10)(x + 10) = -12.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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