(2x^2-13x+7)-(-1-12x)=

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Solution for (2x^2-13x+7)-(-1-12x)= equation:


Simplifying
(2x2 + -13x + 7) + -1(-1 + -12x) = 0

Reorder the terms:
(7 + -13x + 2x2) + -1(-1 + -12x) = 0

Remove parenthesis around (7 + -13x + 2x2)
7 + -13x + 2x2 + -1(-1 + -12x) = 0
7 + -13x + 2x2 + (-1 * -1 + -12x * -1) = 0
7 + -13x + 2x2 + (1 + 12x) = 0

Reorder the terms:
7 + 1 + -13x + 12x + 2x2 = 0

Combine like terms: 7 + 1 = 8
8 + -13x + 12x + 2x2 = 0

Combine like terms: -13x + 12x = -1x
8 + -1x + 2x2 = 0

Solving
8 + -1x + 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'.
4 + -0.5x + x2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -0.5x + -4 + x2 = 0 + -4

Reorder the terms:
4 + -4 + -0.5x + x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -0.5x + x2 = 0 + -4
-0.5x + x2 = 0 + -4

Combine like terms: 0 + -4 = -4
-0.5x + x2 = -4

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 = -4 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = -4 + 0.0625

Combine like terms: -4 + 0.0625 = -3.9375
0.0625 + -0.5x + x2 = -3.9375

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = -3.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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