9x^2+43x-3=0

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Solution for 9x^2+43x-3=0 equation:


Simplifying
9x2 + 43x + -3 = 0

Reorder the terms:
-3 + 43x + 9x2 = 0

Solving
-3 + 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'.
-0.3333333333 + 4.777777778x + x2 = 0

Move the constant term to the right:

Add '0.3333333333' to each side of the equation.
-0.3333333333 + 4.777777778x + 0.3333333333 + x2 = 0 + 0.3333333333

Reorder the terms:
-0.3333333333 + 0.3333333333 + 4.777777778x + x2 = 0 + 0.3333333333

Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000
0.0000000000 + 4.777777778x + x2 = 0 + 0.3333333333
4.777777778x + x2 = 0 + 0.3333333333

Combine like terms: 0 + 0.3333333333 = 0.3333333333
4.777777778x + x2 = 0.3333333333

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 = 0.3333333333 + 5.706790124

Reorder the terms:
5.706790124 + 4.777777778x + x2 = 0.3333333333 + 5.706790124

Combine like terms: 0.3333333333 + 5.706790124 = 6.0401234573
5.706790124 + 4.777777778x + x2 = 6.0401234573

Factor a perfect square on the left side:
(x + 2.388888889)(x + 2.388888889) = 6.0401234573

Calculate the square root of the right side: 2.457666262

Break this problem into two subproblems by setting 
(x + 2.388888889) equal to 2.457666262 and -2.457666262.

Subproblem 1

x + 2.388888889 = 2.457666262 Simplifying x + 2.388888889 = 2.457666262 Reorder the terms: 2.388888889 + x = 2.457666262 Solving 2.388888889 + x = 2.457666262 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 = 2.457666262 + -2.388888889 Combine like terms: 2.388888889 + -2.388888889 = 0.000000000 0.000000000 + x = 2.457666262 + -2.388888889 x = 2.457666262 + -2.388888889 Combine like terms: 2.457666262 + -2.388888889 = 0.068777373 x = 0.068777373 Simplifying x = 0.068777373

Subproblem 2

x + 2.388888889 = -2.457666262 Simplifying x + 2.388888889 = -2.457666262 Reorder the terms: 2.388888889 + x = -2.457666262 Solving 2.388888889 + x = -2.457666262 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 = -2.457666262 + -2.388888889 Combine like terms: 2.388888889 + -2.388888889 = 0.000000000 0.000000000 + x = -2.457666262 + -2.388888889 x = -2.457666262 + -2.388888889 Combine like terms: -2.457666262 + -2.388888889 = -4.846555151 x = -4.846555151 Simplifying x = -4.846555151

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.068777373, -4.846555151}

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