2x^2=6+19x

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Solution for 2x^2=6+19x equation:


Simplifying
2x2 = 6 + 19x

Solving
2x2 = 6 + 19x

Solving for variable 'x'.

Reorder the terms:
-6 + -19x + 2x2 = 6 + 19x + -6 + -19x

Reorder the terms:
-6 + -19x + 2x2 = 6 + -6 + 19x + -19x

Combine like terms: 6 + -6 = 0
-6 + -19x + 2x2 = 0 + 19x + -19x
-6 + -19x + 2x2 = 19x + -19x

Combine like terms: 19x + -19x = 0
-6 + -19x + 2x2 = 0

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

Divide each side by '2'.
-3 + -9.5x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -9.5x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -9.5x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -9.5x + x2 = 0 + 3
-9.5x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-9.5x + x2 = 3

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 = 3 + 22.5625

Reorder the terms:
22.5625 + -9.5x + x2 = 3 + 22.5625

Combine like terms: 3 + 22.5625 = 25.5625
22.5625 + -9.5x + x2 = 25.5625

Factor a perfect square on the left side:
(x + -4.75)(x + -4.75) = 25.5625

Calculate the square root of the right side: 5.055937104

Break this problem into two subproblems by setting 
(x + -4.75) equal to 5.055937104 and -5.055937104.

Subproblem 1

x + -4.75 = 5.055937104 Simplifying x + -4.75 = 5.055937104 Reorder the terms: -4.75 + x = 5.055937104 Solving -4.75 + x = 5.055937104 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 = 5.055937104 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = 5.055937104 + 4.75 x = 5.055937104 + 4.75 Combine like terms: 5.055937104 + 4.75 = 9.805937104 x = 9.805937104 Simplifying x = 9.805937104

Subproblem 2

x + -4.75 = -5.055937104 Simplifying x + -4.75 = -5.055937104 Reorder the terms: -4.75 + x = -5.055937104 Solving -4.75 + x = -5.055937104 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 = -5.055937104 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + x = -5.055937104 + 4.75 x = -5.055937104 + 4.75 Combine like terms: -5.055937104 + 4.75 = -0.305937104 x = -0.305937104 Simplifying x = -0.305937104

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.805937104, -0.305937104}

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