2x^2=19x+3

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Solution for 2x^2=19x+3 equation:


Simplifying
2x2 = 19x + 3

Reorder the terms:
2x2 = 3 + 19x

Solving
2x2 = 3 + 19x

Solving for variable 'x'.

Reorder the terms:
-3 + -19x + 2x2 = 3 + 19x + -3 + -19x

Reorder the terms:
-3 + -19x + 2x2 = 3 + -3 + 19x + -19x

Combine like terms: 3 + -3 = 0
-3 + -19x + 2x2 = 0 + 19x + -19x
-3 + -19x + 2x2 = 19x + -19x

Combine like terms: 19x + -19x = 0
-3 + -19x + 2x2 = 0

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

Divide each side by '2'.
-1.5 + -9.5x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -9.5x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -9.5x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -9.5x + x2 = 0 + 1.5
-9.5x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-9.5x + x2 = 1.5

The x term is -9.5x.  Take half its coefficient (-4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
-9.5x + 22.5625 + x2 = 1.5 + 22.5625

Reorder the terms:
22.5625 + -9.5x + x2 = 1.5 + 22.5625

Combine like terms: 1.5 + 22.5625 = 24.0625
22.5625 + -9.5x + x2 = 24.0625

Factor a perfect square on the left side:
(x + -4.75)(x + -4.75) = 24.0625

Calculate the square root of the right side: 4.905354218

Break this problem into two subproblems by setting 
(x + -4.75) equal to 4.905354218 and -4.905354218.

Subproblem 1

x + -4.75 = 4.905354218 Simplifying x + -4.75 = 4.905354218 Reorder the terms: -4.75 + x = 4.905354218 Solving -4.75 + x = 4.905354218 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + x = 4.905354218 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = 4.905354218 + 4.75 x = 4.905354218 + 4.75 Combine like terms: 4.905354218 + 4.75 = 9.655354218 x = 9.655354218 Simplifying x = 9.655354218

Subproblem 2

x + -4.75 = -4.905354218 Simplifying x + -4.75 = -4.905354218 Reorder the terms: -4.75 + x = -4.905354218 Solving -4.75 + x = -4.905354218 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + x = -4.905354218 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = -4.905354218 + 4.75 x = -4.905354218 + 4.75 Combine like terms: -4.905354218 + 4.75 = -0.155354218 x = -0.155354218 Simplifying x = -0.155354218

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.655354218, -0.155354218}

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