2x^2+72=x

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Solution for 2x^2+72=x equation:


Simplifying
2x2 + 72 = x

Reorder the terms:
72 + 2x2 = x

Solving
72 + 2x2 = x

Solving for variable 'x'.

Reorder the terms:
72 + -1x + 2x2 = x + -1x

Combine like terms: x + -1x = 0
72 + -1x + 2x2 = 0

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

Divide each side by '2'.
36 + -0.5x + x2 = 0

Move the constant term to the right:

Add '-36' to each side of the equation.
36 + -0.5x + -36 + x2 = 0 + -36

Reorder the terms:
36 + -36 + -0.5x + x2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -0.5x + x2 = 0 + -36
-0.5x + x2 = 0 + -36

Combine like terms: 0 + -36 = -36
-0.5x + x2 = -36

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 = -36 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = -36 + 0.0625

Combine like terms: -36 + 0.0625 = -35.9375
0.0625 + -0.5x + x2 = -35.9375

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = -35.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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