4+35x+9x^2=0

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Solution for 4+35x+9x^2=0 equation:


Simplifying
4 + 35x + 9x2 = 0

Solving
4 + 35x + 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'.
0.4444444444 + 3.888888889x + x2 = 0

Move the constant term to the right:

Add '-0.4444444444' to each side of the equation.
0.4444444444 + 3.888888889x + -0.4444444444 + x2 = 0 + -0.4444444444

Reorder the terms:
0.4444444444 + -0.4444444444 + 3.888888889x + x2 = 0 + -0.4444444444

Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000
0.0000000000 + 3.888888889x + x2 = 0 + -0.4444444444
3.888888889x + x2 = 0 + -0.4444444444

Combine like terms: 0 + -0.4444444444 = -0.4444444444
3.888888889x + x2 = -0.4444444444

The x term is 3.888888889x.  Take half its coefficient (1.944444445).
Square it (3.780864200) and add it to both sides.

Add '3.780864200' to each side of the equation.
3.888888889x + 3.780864200 + x2 = -0.4444444444 + 3.780864200

Reorder the terms:
3.780864200 + 3.888888889x + x2 = -0.4444444444 + 3.780864200

Combine like terms: -0.4444444444 + 3.780864200 = 3.3364197556
3.780864200 + 3.888888889x + x2 = 3.3364197556

Factor a perfect square on the left side:
(x + 1.944444445)(x + 1.944444445) = 3.3364197556

Calculate the square root of the right side: 1.826586914

Break this problem into two subproblems by setting 
(x + 1.944444445) equal to 1.826586914 and -1.826586914.

Subproblem 1

x + 1.944444445 = 1.826586914 Simplifying x + 1.944444445 = 1.826586914 Reorder the terms: 1.944444445 + x = 1.826586914 Solving 1.944444445 + x = 1.826586914 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.944444445' to each side of the equation. 1.944444445 + -1.944444445 + x = 1.826586914 + -1.944444445 Combine like terms: 1.944444445 + -1.944444445 = 0.000000000 0.000000000 + x = 1.826586914 + -1.944444445 x = 1.826586914 + -1.944444445 Combine like terms: 1.826586914 + -1.944444445 = -0.117857531 x = -0.117857531 Simplifying x = -0.117857531

Subproblem 2

x + 1.944444445 = -1.826586914 Simplifying x + 1.944444445 = -1.826586914 Reorder the terms: 1.944444445 + x = -1.826586914 Solving 1.944444445 + x = -1.826586914 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.944444445' to each side of the equation. 1.944444445 + -1.944444445 + x = -1.826586914 + -1.944444445 Combine like terms: 1.944444445 + -1.944444445 = 0.000000000 0.000000000 + x = -1.826586914 + -1.944444445 x = -1.826586914 + -1.944444445 Combine like terms: -1.826586914 + -1.944444445 = -3.771031359 x = -3.771031359 Simplifying x = -3.771031359

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.117857531, -3.771031359}

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