45x^2-21x-59=0

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Solution for 45x^2-21x-59=0 equation:


Simplifying
45x2 + -21x + -59 = 0

Reorder the terms:
-59 + -21x + 45x2 = 0

Solving
-59 + -21x + 45x2 = 0

Solving for variable 'x'.

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

Divide each side by '45'.
-1.311111111 + -0.4666666667x + x2 = 0

Move the constant term to the right:

Add '1.311111111' to each side of the equation.
-1.311111111 + -0.4666666667x + 1.311111111 + x2 = 0 + 1.311111111

Reorder the terms:
-1.311111111 + 1.311111111 + -0.4666666667x + x2 = 0 + 1.311111111

Combine like terms: -1.311111111 + 1.311111111 = 0.000000000
0.000000000 + -0.4666666667x + x2 = 0 + 1.311111111
-0.4666666667x + x2 = 0 + 1.311111111

Combine like terms: 0 + 1.311111111 = 1.311111111
-0.4666666667x + x2 = 1.311111111

The x term is -0.4666666667x.  Take half its coefficient (-0.2333333334).
Square it (0.05444444448) and add it to both sides.

Add '0.05444444448' to each side of the equation.
-0.4666666667x + 0.05444444448 + x2 = 1.311111111 + 0.05444444448

Reorder the terms:
0.05444444448 + -0.4666666667x + x2 = 1.311111111 + 0.05444444448

Combine like terms: 1.311111111 + 0.05444444448 = 1.36555555548
0.05444444448 + -0.4666666667x + x2 = 1.36555555548

Factor a perfect square on the left side:
(x + -0.2333333334)(x + -0.2333333334) = 1.36555555548

Calculate the square root of the right side: 1.168569876

Break this problem into two subproblems by setting 
(x + -0.2333333334) equal to 1.168569876 and -1.168569876.

Subproblem 1

x + -0.2333333334 = 1.168569876 Simplifying x + -0.2333333334 = 1.168569876 Reorder the terms: -0.2333333334 + x = 1.168569876 Solving -0.2333333334 + x = 1.168569876 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2333333334' to each side of the equation. -0.2333333334 + 0.2333333334 + x = 1.168569876 + 0.2333333334 Combine like terms: -0.2333333334 + 0.2333333334 = 0.0000000000 0.0000000000 + x = 1.168569876 + 0.2333333334 x = 1.168569876 + 0.2333333334 Combine like terms: 1.168569876 + 0.2333333334 = 1.4019032094 x = 1.4019032094 Simplifying x = 1.4019032094

Subproblem 2

x + -0.2333333334 = -1.168569876 Simplifying x + -0.2333333334 = -1.168569876 Reorder the terms: -0.2333333334 + x = -1.168569876 Solving -0.2333333334 + x = -1.168569876 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2333333334' to each side of the equation. -0.2333333334 + 0.2333333334 + x = -1.168569876 + 0.2333333334 Combine like terms: -0.2333333334 + 0.2333333334 = 0.0000000000 0.0000000000 + x = -1.168569876 + 0.2333333334 x = -1.168569876 + 0.2333333334 Combine like terms: -1.168569876 + 0.2333333334 = -0.9352365426 x = -0.9352365426 Simplifying x = -0.9352365426

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.4019032094, -0.9352365426}

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