4x^2-26x=-19

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Solution for 4x^2-26x=-19 equation:


Simplifying
4x2 + -26x = -19

Reorder the terms:
-26x + 4x2 = -19

Solving
-26x + 4x2 = -19

Solving for variable 'x'.

Reorder the terms:
19 + -26x + 4x2 = -19 + 19

Combine like terms: -19 + 19 = 0
19 + -26x + 4x2 = 0

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

Divide each side by '4'.
4.75 + -6.5x + x2 = 0

Move the constant term to the right:

Add '-4.75' to each side of the equation.
4.75 + -6.5x + -4.75 + x2 = 0 + -4.75

Reorder the terms:
4.75 + -4.75 + -6.5x + x2 = 0 + -4.75

Combine like terms: 4.75 + -4.75 = 0.00
0.00 + -6.5x + x2 = 0 + -4.75
-6.5x + x2 = 0 + -4.75

Combine like terms: 0 + -4.75 = -4.75
-6.5x + x2 = -4.75

The x term is -6.5x.  Take half its coefficient (-3.25).
Square it (10.5625) and add it to both sides.

Add '10.5625' to each side of the equation.
-6.5x + 10.5625 + x2 = -4.75 + 10.5625

Reorder the terms:
10.5625 + -6.5x + x2 = -4.75 + 10.5625

Combine like terms: -4.75 + 10.5625 = 5.8125
10.5625 + -6.5x + x2 = 5.8125

Factor a perfect square on the left side:
(x + -3.25)(x + -3.25) = 5.8125

Calculate the square root of the right side: 2.41091269

Break this problem into two subproblems by setting 
(x + -3.25) equal to 2.41091269 and -2.41091269.

Subproblem 1

x + -3.25 = 2.41091269 Simplifying x + -3.25 = 2.41091269 Reorder the terms: -3.25 + x = 2.41091269 Solving -3.25 + x = 2.41091269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + x = 2.41091269 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + x = 2.41091269 + 3.25 x = 2.41091269 + 3.25 Combine like terms: 2.41091269 + 3.25 = 5.66091269 x = 5.66091269 Simplifying x = 5.66091269

Subproblem 2

x + -3.25 = -2.41091269 Simplifying x + -3.25 = -2.41091269 Reorder the terms: -3.25 + x = -2.41091269 Solving -3.25 + x = -2.41091269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + x = -2.41091269 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + x = -2.41091269 + 3.25 x = -2.41091269 + 3.25 Combine like terms: -2.41091269 + 3.25 = 0.83908731 x = 0.83908731 Simplifying x = 0.83908731

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.66091269, 0.83908731}

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