9x^2+58x+73=0

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Solution for 9x^2+58x+73=0 equation:


Simplifying
9x2 + 58x + 73 = 0

Reorder the terms:
73 + 58x + 9x2 = 0

Solving
73 + 58x + 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'.
8.111111111 + 6.444444444x + x2 = 0

Move the constant term to the right:

Add '-8.111111111' to each side of the equation.
8.111111111 + 6.444444444x + -8.111111111 + x2 = 0 + -8.111111111

Reorder the terms:
8.111111111 + -8.111111111 + 6.444444444x + x2 = 0 + -8.111111111

Combine like terms: 8.111111111 + -8.111111111 = 0.000000000
0.000000000 + 6.444444444x + x2 = 0 + -8.111111111
6.444444444x + x2 = 0 + -8.111111111

Combine like terms: 0 + -8.111111111 = -8.111111111
6.444444444x + x2 = -8.111111111

The x term is 6.444444444x.  Take half its coefficient (3.222222222).
Square it (10.38271605) and add it to both sides.

Add '10.38271605' to each side of the equation.
6.444444444x + 10.38271605 + x2 = -8.111111111 + 10.38271605

Reorder the terms:
10.38271605 + 6.444444444x + x2 = -8.111111111 + 10.38271605

Combine like terms: -8.111111111 + 10.38271605 = 2.271604939
10.38271605 + 6.444444444x + x2 = 2.271604939

Factor a perfect square on the left side:
(x + 3.222222222)(x + 3.222222222) = 2.271604939

Calculate the square root of the right side: 1.507184441

Break this problem into two subproblems by setting 
(x + 3.222222222) equal to 1.507184441 and -1.507184441.

Subproblem 1

x + 3.222222222 = 1.507184441 Simplifying x + 3.222222222 = 1.507184441 Reorder the terms: 3.222222222 + x = 1.507184441 Solving 3.222222222 + x = 1.507184441 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.222222222' to each side of the equation. 3.222222222 + -3.222222222 + x = 1.507184441 + -3.222222222 Combine like terms: 3.222222222 + -3.222222222 = 0.000000000 0.000000000 + x = 1.507184441 + -3.222222222 x = 1.507184441 + -3.222222222 Combine like terms: 1.507184441 + -3.222222222 = -1.715037781 x = -1.715037781 Simplifying x = -1.715037781

Subproblem 2

x + 3.222222222 = -1.507184441 Simplifying x + 3.222222222 = -1.507184441 Reorder the terms: 3.222222222 + x = -1.507184441 Solving 3.222222222 + x = -1.507184441 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.222222222' to each side of the equation. 3.222222222 + -3.222222222 + x = -1.507184441 + -3.222222222 Combine like terms: 3.222222222 + -3.222222222 = 0.000000000 0.000000000 + x = -1.507184441 + -3.222222222 x = -1.507184441 + -3.222222222 Combine like terms: -1.507184441 + -3.222222222 = -4.729406663 x = -4.729406663 Simplifying x = -4.729406663

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.715037781, -4.729406663}

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