2x^2=777x+4

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Solution for 2x^2=777x+4 equation:


Simplifying
2x2 = 777x + 4

Reorder the terms:
2x2 = 4 + 777x

Solving
2x2 = 4 + 777x

Solving for variable 'x'.

Reorder the terms:
-4 + -777x + 2x2 = 4 + 777x + -4 + -777x

Reorder the terms:
-4 + -777x + 2x2 = 4 + -4 + 777x + -777x

Combine like terms: 4 + -4 = 0
-4 + -777x + 2x2 = 0 + 777x + -777x
-4 + -777x + 2x2 = 777x + -777x

Combine like terms: 777x + -777x = 0
-4 + -777x + 2x2 = 0

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

Divide each side by '2'.
-2 + -388.5x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -388.5x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + -388.5x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -388.5x + x2 = 0 + 2
-388.5x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
-388.5x + x2 = 2

The x term is -388.5x.  Take half its coefficient (-194.25).
Square it (37733.0625) and add it to both sides.

Add '37733.0625' to each side of the equation.
-388.5x + 37733.0625 + x2 = 2 + 37733.0625

Reorder the terms:
37733.0625 + -388.5x + x2 = 2 + 37733.0625

Combine like terms: 2 + 37733.0625 = 37735.0625
37733.0625 + -388.5x + x2 = 37735.0625

Factor a perfect square on the left side:
(x + -194.25)(x + -194.25) = 37735.0625

Calculate the square root of the right side: 194.255147937

Break this problem into two subproblems by setting 
(x + -194.25) equal to 194.255147937 and -194.255147937.

Subproblem 1

x + -194.25 = 194.255147937 Simplifying x + -194.25 = 194.255147937 Reorder the terms: -194.25 + x = 194.255147937 Solving -194.25 + x = 194.255147937 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '194.25' to each side of the equation. -194.25 + 194.25 + x = 194.255147937 + 194.25 Combine like terms: -194.25 + 194.25 = 0.00 0.00 + x = 194.255147937 + 194.25 x = 194.255147937 + 194.25 Combine like terms: 194.255147937 + 194.25 = 388.505147937 x = 388.505147937 Simplifying x = 388.505147937

Subproblem 2

x + -194.25 = -194.255147937 Simplifying x + -194.25 = -194.255147937 Reorder the terms: -194.25 + x = -194.255147937 Solving -194.25 + x = -194.255147937 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '194.25' to each side of the equation. -194.25 + 194.25 + x = -194.255147937 + 194.25 Combine like terms: -194.25 + 194.25 = 0.00 0.00 + x = -194.255147937 + 194.25 x = -194.255147937 + 194.25 Combine like terms: -194.255147937 + 194.25 = -0.005147937 x = -0.005147937 Simplifying x = -0.005147937

Solution

The solution to the problem is based on the solutions from the subproblems. x = {388.505147937, -0.005147937}

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