0=0.01x^2+-1x+28

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Solution for 0=0.01x^2+-1x+28 equation:


Simplifying
0 = 0.01x2 + -1x + 28

Reorder the terms:
0 = 28 + -1x + 0.01x2

Solving
0 = 28 + -1x + 0.01x2

Solving for variable 'x'.

Combine like terms: 0 + -28 = -28
-28 + x + -0.01x2 = 28 + -1x + 0.01x2 + -28 + x + -0.01x2

Reorder the terms:
-28 + x + -0.01x2 = 28 + -28 + -1x + x + 0.01x2 + -0.01x2

Combine like terms: 28 + -28 = 0
-28 + x + -0.01x2 = 0 + -1x + x + 0.01x2 + -0.01x2
-28 + x + -0.01x2 = -1x + x + 0.01x2 + -0.01x2

Combine like terms: -1x + x = 0
-28 + x + -0.01x2 = 0 + 0.01x2 + -0.01x2
-28 + x + -0.01x2 = 0.01x2 + -0.01x2

Combine like terms: 0.01x2 + -0.01x2 = 0.00
-28 + x + -0.01x2 = 0.00

Begin completing the square.  Divide all terms by
-0.01 the coefficient of the squared term: 

Divide each side by '-0.01'.
2800 + -100x + x2 = 0

Move the constant term to the right:

Add '-2800' to each side of the equation.
2800 + -100x + -2800 + x2 = 0 + -2800

Reorder the terms:
2800 + -2800 + -100x + x2 = 0 + -2800

Combine like terms: 2800 + -2800 = 0
0 + -100x + x2 = 0 + -2800
-100x + x2 = 0 + -2800

Combine like terms: 0 + -2800 = -2800
-100x + x2 = -2800

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-100x + 0.25 + x2 = -2800 + 0.25

Reorder the terms:
0.25 + -100x + x2 = -2800 + 0.25

Combine like terms: -2800 + 0.25 = -2799.75
0.25 + -100x + x2 = -2799.75

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -2799.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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