9x^2+42x+37=0

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Solution for 9x^2+42x+37=0 equation:


Simplifying
9x2 + 42x + 37 = 0

Reorder the terms:
37 + 42x + 9x2 = 0

Solving
37 + 42x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
4.111111111 + 4.666666667x + x2 = 0

Move the constant term to the right:

Add '-4.111111111' to each side of the equation.
4.111111111 + 4.666666667x + -4.111111111 + x2 = 0 + -4.111111111

Reorder the terms:
4.111111111 + -4.111111111 + 4.666666667x + x2 = 0 + -4.111111111

Combine like terms: 4.111111111 + -4.111111111 = 0.000000000
0.000000000 + 4.666666667x + x2 = 0 + -4.111111111
4.666666667x + x2 = 0 + -4.111111111

Combine like terms: 0 + -4.111111111 = -4.111111111
4.666666667x + x2 = -4.111111111

The x term is 4.666666667x.  Take half its coefficient (2.333333334).
Square it (5.444444448) and add it to both sides.

Add '5.444444448' to each side of the equation.
4.666666667x + 5.444444448 + x2 = -4.111111111 + 5.444444448

Reorder the terms:
5.444444448 + 4.666666667x + x2 = -4.111111111 + 5.444444448

Combine like terms: -4.111111111 + 5.444444448 = 1.333333337
5.444444448 + 4.666666667x + x2 = 1.333333337

Factor a perfect square on the left side:
(x + 2.333333334)(x + 2.333333334) = 1.333333337

Calculate the square root of the right side: 1.15470054

Break this problem into two subproblems by setting 
(x + 2.333333334) equal to 1.15470054 and -1.15470054.

Subproblem 1

x + 2.333333334 = 1.15470054 Simplifying x + 2.333333334 = 1.15470054 Reorder the terms: 2.333333334 + x = 1.15470054 Solving 2.333333334 + x = 1.15470054 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.333333334' to each side of the equation. 2.333333334 + -2.333333334 + x = 1.15470054 + -2.333333334 Combine like terms: 2.333333334 + -2.333333334 = 0.000000000 0.000000000 + x = 1.15470054 + -2.333333334 x = 1.15470054 + -2.333333334 Combine like terms: 1.15470054 + -2.333333334 = -1.178632794 x = -1.178632794 Simplifying x = -1.178632794

Subproblem 2

x + 2.333333334 = -1.15470054 Simplifying x + 2.333333334 = -1.15470054 Reorder the terms: 2.333333334 + x = -1.15470054 Solving 2.333333334 + x = -1.15470054 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.333333334' to each side of the equation. 2.333333334 + -2.333333334 + x = -1.15470054 + -2.333333334 Combine like terms: 2.333333334 + -2.333333334 = 0.000000000 0.000000000 + x = -1.15470054 + -2.333333334 x = -1.15470054 + -2.333333334 Combine like terms: -1.15470054 + -2.333333334 = -3.488033874 x = -3.488033874 Simplifying x = -3.488033874

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.178632794, -3.488033874}

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