422x^2-506x-347=0

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Solution for 422x^2-506x-347=0 equation:


Simplifying
422x2 + -506x + -347 = 0

Reorder the terms:
-347 + -506x + 422x2 = 0

Solving
-347 + -506x + 422x2 = 0

Solving for variable 'x'.

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

Divide each side by '422'.
-0.8222748815 + -1.199052133x + x2 = 0

Move the constant term to the right:

Add '0.8222748815' to each side of the equation.
-0.8222748815 + -1.199052133x + 0.8222748815 + x2 = 0 + 0.8222748815

Reorder the terms:
-0.8222748815 + 0.8222748815 + -1.199052133x + x2 = 0 + 0.8222748815

Combine like terms: -0.8222748815 + 0.8222748815 = 0.0000000000
0.0000000000 + -1.199052133x + x2 = 0 + 0.8222748815
-1.199052133x + x2 = 0 + 0.8222748815

Combine like terms: 0 + 0.8222748815 = 0.8222748815
-1.199052133x + x2 = 0.8222748815

The x term is -1.199052133x.  Take half its coefficient (-0.5995260665).
Square it (0.3594315044) and add it to both sides.

Add '0.3594315044' to each side of the equation.
-1.199052133x + 0.3594315044 + x2 = 0.8222748815 + 0.3594315044

Reorder the terms:
0.3594315044 + -1.199052133x + x2 = 0.8222748815 + 0.3594315044

Combine like terms: 0.8222748815 + 0.3594315044 = 1.1817063859
0.3594315044 + -1.199052133x + x2 = 1.1817063859

Factor a perfect square on the left side:
(x + -0.5995260665)(x + -0.5995260665) = 1.1817063859

Calculate the square root of the right side: 1.087063193

Break this problem into two subproblems by setting 
(x + -0.5995260665) equal to 1.087063193 and -1.087063193.

Subproblem 1

x + -0.5995260665 = 1.087063193 Simplifying x + -0.5995260665 = 1.087063193 Reorder the terms: -0.5995260665 + x = 1.087063193 Solving -0.5995260665 + x = 1.087063193 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5995260665' to each side of the equation. -0.5995260665 + 0.5995260665 + x = 1.087063193 + 0.5995260665 Combine like terms: -0.5995260665 + 0.5995260665 = 0.0000000000 0.0000000000 + x = 1.087063193 + 0.5995260665 x = 1.087063193 + 0.5995260665 Combine like terms: 1.087063193 + 0.5995260665 = 1.6865892595 x = 1.6865892595 Simplifying x = 1.6865892595

Subproblem 2

x + -0.5995260665 = -1.087063193 Simplifying x + -0.5995260665 = -1.087063193 Reorder the terms: -0.5995260665 + x = -1.087063193 Solving -0.5995260665 + x = -1.087063193 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5995260665' to each side of the equation. -0.5995260665 + 0.5995260665 + x = -1.087063193 + 0.5995260665 Combine like terms: -0.5995260665 + 0.5995260665 = 0.0000000000 0.0000000000 + x = -1.087063193 + 0.5995260665 x = -1.087063193 + 0.5995260665 Combine like terms: -1.087063193 + 0.5995260665 = -0.4875371265 x = -0.4875371265 Simplifying x = -0.4875371265

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.6865892595, -0.4875371265}

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