26x^2+17x-45=0

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Solution for 26x^2+17x-45=0 equation:


Simplifying
26x2 + 17x + -45 = 0

Reorder the terms:
-45 + 17x + 26x2 = 0

Solving
-45 + 17x + 26x2 = 0

Solving for variable 'x'.

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

Divide each side by '26'.
-1.730769231 + 0.6538461538x + x2 = 0

Move the constant term to the right:

Add '1.730769231' to each side of the equation.
-1.730769231 + 0.6538461538x + 1.730769231 + x2 = 0 + 1.730769231

Reorder the terms:
-1.730769231 + 1.730769231 + 0.6538461538x + x2 = 0 + 1.730769231

Combine like terms: -1.730769231 + 1.730769231 = 0.000000000
0.000000000 + 0.6538461538x + x2 = 0 + 1.730769231
0.6538461538x + x2 = 0 + 1.730769231

Combine like terms: 0 + 1.730769231 = 1.730769231
0.6538461538x + x2 = 1.730769231

The x term is 0.6538461538x.  Take half its coefficient (0.3269230769).
Square it (0.1068786982) and add it to both sides.

Add '0.1068786982' to each side of the equation.
0.6538461538x + 0.1068786982 + x2 = 1.730769231 + 0.1068786982

Reorder the terms:
0.1068786982 + 0.6538461538x + x2 = 1.730769231 + 0.1068786982

Combine like terms: 1.730769231 + 0.1068786982 = 1.8376479292
0.1068786982 + 0.6538461538x + x2 = 1.8376479292

Factor a perfect square on the left side:
(x + 0.3269230769)(x + 0.3269230769) = 1.8376479292

Calculate the square root of the right side: 1.355598735

Break this problem into two subproblems by setting 
(x + 0.3269230769) equal to 1.355598735 and -1.355598735.

Subproblem 1

x + 0.3269230769 = 1.355598735 Simplifying x + 0.3269230769 = 1.355598735 Reorder the terms: 0.3269230769 + x = 1.355598735 Solving 0.3269230769 + x = 1.355598735 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3269230769' to each side of the equation. 0.3269230769 + -0.3269230769 + x = 1.355598735 + -0.3269230769 Combine like terms: 0.3269230769 + -0.3269230769 = 0.0000000000 0.0000000000 + x = 1.355598735 + -0.3269230769 x = 1.355598735 + -0.3269230769 Combine like terms: 1.355598735 + -0.3269230769 = 1.0286756581 x = 1.0286756581 Simplifying x = 1.0286756581

Subproblem 2

x + 0.3269230769 = -1.355598735 Simplifying x + 0.3269230769 = -1.355598735 Reorder the terms: 0.3269230769 + x = -1.355598735 Solving 0.3269230769 + x = -1.355598735 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3269230769' to each side of the equation. 0.3269230769 + -0.3269230769 + x = -1.355598735 + -0.3269230769 Combine like terms: 0.3269230769 + -0.3269230769 = 0.0000000000 0.0000000000 + x = -1.355598735 + -0.3269230769 x = -1.355598735 + -0.3269230769 Combine like terms: -1.355598735 + -0.3269230769 = -1.6825218119 x = -1.6825218119 Simplifying x = -1.6825218119

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.0286756581, -1.6825218119}

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