9x^2+47x+52=0

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Solution for 9x^2+47x+52=0 equation:


Simplifying
9x2 + 47x + 52 = 0

Reorder the terms:
52 + 47x + 9x2 = 0

Solving
52 + 47x + 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'.
5.777777778 + 5.222222222x + x2 = 0

Move the constant term to the right:

Add '-5.777777778' to each side of the equation.
5.777777778 + 5.222222222x + -5.777777778 + x2 = 0 + -5.777777778

Reorder the terms:
5.777777778 + -5.777777778 + 5.222222222x + x2 = 0 + -5.777777778

Combine like terms: 5.777777778 + -5.777777778 = 0.000000000
0.000000000 + 5.222222222x + x2 = 0 + -5.777777778
5.222222222x + x2 = 0 + -5.777777778

Combine like terms: 0 + -5.777777778 = -5.777777778
5.222222222x + x2 = -5.777777778

The x term is 5.222222222x.  Take half its coefficient (2.611111111).
Square it (6.817901234) and add it to both sides.

Add '6.817901234' to each side of the equation.
5.222222222x + 6.817901234 + x2 = -5.777777778 + 6.817901234

Reorder the terms:
6.817901234 + 5.222222222x + x2 = -5.777777778 + 6.817901234

Combine like terms: -5.777777778 + 6.817901234 = 1.040123456
6.817901234 + 5.222222222x + x2 = 1.040123456

Factor a perfect square on the left side:
(x + 2.611111111)(x + 2.611111111) = 1.040123456

Calculate the square root of the right side: 1.01986443

Break this problem into two subproblems by setting 
(x + 2.611111111) equal to 1.01986443 and -1.01986443.

Subproblem 1

x + 2.611111111 = 1.01986443 Simplifying x + 2.611111111 = 1.01986443 Reorder the terms: 2.611111111 + x = 1.01986443 Solving 2.611111111 + x = 1.01986443 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.611111111' to each side of the equation. 2.611111111 + -2.611111111 + x = 1.01986443 + -2.611111111 Combine like terms: 2.611111111 + -2.611111111 = 0.000000000 0.000000000 + x = 1.01986443 + -2.611111111 x = 1.01986443 + -2.611111111 Combine like terms: 1.01986443 + -2.611111111 = -1.591246681 x = -1.591246681 Simplifying x = -1.591246681

Subproblem 2

x + 2.611111111 = -1.01986443 Simplifying x + 2.611111111 = -1.01986443 Reorder the terms: 2.611111111 + x = -1.01986443 Solving 2.611111111 + x = -1.01986443 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.611111111' to each side of the equation. 2.611111111 + -2.611111111 + x = -1.01986443 + -2.611111111 Combine like terms: 2.611111111 + -2.611111111 = 0.000000000 0.000000000 + x = -1.01986443 + -2.611111111 x = -1.01986443 + -2.611111111 Combine like terms: -1.01986443 + -2.611111111 = -3.630975541 x = -3.630975541 Simplifying x = -3.630975541

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.591246681, -3.630975541}

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