.8x^2+2.6x=-3.2

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Solution for .8x^2+2.6x=-3.2 equation:


Simplifying
0.8x2 + 2.6x = -3.2

Reorder the terms:
2.6x + 0.8x2 = -3.2

Solving
2.6x + 0.8x2 = -3.2

Solving for variable 'x'.

Reorder the terms:
3.2 + 2.6x + 0.8x2 = -3.2 + 3.2

Combine like terms: -3.2 + 3.2 = 0.0
3.2 + 2.6x + 0.8x2 = 0.0

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

Divide each side by '0.8'.
4 + 3.25x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 3.25x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + 3.25x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 3.25x + x2 = 0 + -4
3.25x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
3.25x + x2 = -4

The x term is 3.25x.  Take half its coefficient (1.625).
Square it (2.640625) and add it to both sides.

Add '2.640625' to each side of the equation.
3.25x + 2.640625 + x2 = -4 + 2.640625

Reorder the terms:
2.640625 + 3.25x + x2 = -4 + 2.640625

Combine like terms: -4 + 2.640625 = -1.359375
2.640625 + 3.25x + x2 = -1.359375

Factor a perfect square on the left side:
(x + 1.625)(x + 1.625) = -1.359375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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