26x^2+13x+40=

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Solution for 26x^2+13x+40= equation:


Simplifying
26x2 + 13x + 40 = 0

Reorder the terms:
40 + 13x + 26x2 = 0

Solving
40 + 13x + 26x2 = 0

Solving for variable 'x'.

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

Divide each side by '26'.
1.538461538 + 0.5x + x2 = 0

Move the constant term to the right:

Add '-1.538461538' to each side of the equation.
1.538461538 + 0.5x + -1.538461538 + x2 = 0 + -1.538461538

Reorder the terms:
1.538461538 + -1.538461538 + 0.5x + x2 = 0 + -1.538461538

Combine like terms: 1.538461538 + -1.538461538 = 0.000000000
0.000000000 + 0.5x + x2 = 0 + -1.538461538
0.5x + x2 = 0 + -1.538461538

Combine like terms: 0 + -1.538461538 = -1.538461538
0.5x + x2 = -1.538461538

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = -1.538461538 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = -1.538461538 + 0.0625

Combine like terms: -1.538461538 + 0.0625 = -1.475961538
0.0625 + 0.5x + x2 = -1.475961538

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = -1.475961538

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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