9x^2+43x+49=0

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Solution for 9x^2+43x+49=0 equation:


Simplifying
9x2 + 43x + 49 = 0

Reorder the terms:
49 + 43x + 9x2 = 0

Solving
49 + 43x + 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'.
5.444444444 + 4.777777778x + x2 = 0

Move the constant term to the right:

Add '-5.444444444' to each side of the equation.
5.444444444 + 4.777777778x + -5.444444444 + x2 = 0 + -5.444444444

Reorder the terms:
5.444444444 + -5.444444444 + 4.777777778x + x2 = 0 + -5.444444444

Combine like terms: 5.444444444 + -5.444444444 = 0.000000000
0.000000000 + 4.777777778x + x2 = 0 + -5.444444444
4.777777778x + x2 = 0 + -5.444444444

Combine like terms: 0 + -5.444444444 = -5.444444444
4.777777778x + x2 = -5.444444444

The x term is 4.777777778x.  Take half its coefficient (2.388888889).
Square it (5.706790124) and add it to both sides.

Add '5.706790124' to each side of the equation.
4.777777778x + 5.706790124 + x2 = -5.444444444 + 5.706790124

Reorder the terms:
5.706790124 + 4.777777778x + x2 = -5.444444444 + 5.706790124

Combine like terms: -5.444444444 + 5.706790124 = 0.26234568
5.706790124 + 4.777777778x + x2 = 0.26234568

Factor a perfect square on the left side:
(x + 2.388888889)(x + 2.388888889) = 0.26234568

Calculate the square root of the right side: 0.512196915

Break this problem into two subproblems by setting 
(x + 2.388888889) equal to 0.512196915 and -0.512196915.

Subproblem 1

x + 2.388888889 = 0.512196915 Simplifying x + 2.388888889 = 0.512196915 Reorder the terms: 2.388888889 + x = 0.512196915 Solving 2.388888889 + x = 0.512196915 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.388888889' to each side of the equation. 2.388888889 + -2.388888889 + x = 0.512196915 + -2.388888889 Combine like terms: 2.388888889 + -2.388888889 = 0.000000000 0.000000000 + x = 0.512196915 + -2.388888889 x = 0.512196915 + -2.388888889 Combine like terms: 0.512196915 + -2.388888889 = -1.876691974 x = -1.876691974 Simplifying x = -1.876691974

Subproblem 2

x + 2.388888889 = -0.512196915 Simplifying x + 2.388888889 = -0.512196915 Reorder the terms: 2.388888889 + x = -0.512196915 Solving 2.388888889 + x = -0.512196915 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.388888889' to each side of the equation. 2.388888889 + -2.388888889 + x = -0.512196915 + -2.388888889 Combine like terms: 2.388888889 + -2.388888889 = 0.000000000 0.000000000 + x = -0.512196915 + -2.388888889 x = -0.512196915 + -2.388888889 Combine like terms: -0.512196915 + -2.388888889 = -2.901085804 x = -2.901085804 Simplifying x = -2.901085804

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.876691974, -2.901085804}

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