4x^2+22x+31=0

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Solution for 4x^2+22x+31=0 equation:


Simplifying
4x2 + 22x + 31 = 0

Reorder the terms:
31 + 22x + 4x2 = 0

Solving
31 + 22x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
7.75 + 5.5x + x2 = 0

Move the constant term to the right:

Add '-7.75' to each side of the equation.
7.75 + 5.5x + -7.75 + x2 = 0 + -7.75

Reorder the terms:
7.75 + -7.75 + 5.5x + x2 = 0 + -7.75

Combine like terms: 7.75 + -7.75 = 0.00
0.00 + 5.5x + x2 = 0 + -7.75
5.5x + x2 = 0 + -7.75

Combine like terms: 0 + -7.75 = -7.75
5.5x + x2 = -7.75

The x term is 5.5x.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5x + 7.5625 + x2 = -7.75 + 7.5625

Reorder the terms:
7.5625 + 5.5x + x2 = -7.75 + 7.5625

Combine like terms: -7.75 + 7.5625 = -0.1875
7.5625 + 5.5x + x2 = -0.1875

Factor a perfect square on the left side:
(x + 2.75)(x + 2.75) = -0.1875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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