1.55=x-x^2

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Solution for 1.55=x-x^2 equation:


Simplifying
1.55 = x + -1x2

Solving
1.55 = x + -1x2

Solving for variable 'x'.

Reorder the terms:
1.55 + -1x + x2 = x + -1x + -1x2 + x2

Combine like terms: x + -1x = 0
1.55 + -1x + x2 = 0 + -1x2 + x2
1.55 + -1x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
1.55 + -1x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-1.55' to each side of the equation.
1.55 + -1x + -1.55 + x2 = 0 + -1.55

Reorder the terms:
1.55 + -1.55 + -1x + x2 = 0 + -1.55

Combine like terms: 1.55 + -1.55 = 0.00
0.00 + -1x + x2 = 0 + -1.55
-1x + x2 = 0 + -1.55

Combine like terms: 0 + -1.55 = -1.55
-1x + x2 = -1.55

The x term is -1x.  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.
-1x + 0.25 + x2 = -1.55 + 0.25

Reorder the terms:
0.25 + -1x + x2 = -1.55 + 0.25

Combine like terms: -1.55 + 0.25 = -1.3
0.25 + -1x + x2 = -1.3

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = -1.3

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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