4*1.73*x*x+5*x=2*1.73

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Solution for 4*1.73*x*x+5*x=2*1.73 equation:


Simplifying
4 * 1.73x * x + 5x = 2 * 1.73

Multiply 4 * 1.73
6.92x * x + 5x = 2 * 1.73

Multiply x * x
6.92x2 + 5x = 2 * 1.73

Reorder the terms:
5x + 6.92x2 = 2 * 1.73

Multiply 2 * 1.73
5x + 6.92x2 = 3.46

Solving
5x + 6.92x2 = 3.46

Solving for variable 'x'.

Reorder the terms:
-3.46 + 5x + 6.92x2 = 3.46 + -3.46

Combine like terms: 3.46 + -3.46 = 0.00
-3.46 + 5x + 6.92x2 = 0.00

Begin completing the square.  Divide all terms by
6.92 the coefficient of the squared term: 

Divide each side by '6.92'.
-0.5 + 0.7225433526x + x2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + 0.7225433526x + 0.5 + x2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + 0.7225433526x + x2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + 0.7225433526x + x2 = 0 + 0.5
0.7225433526x + x2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
0.7225433526x + x2 = 0.5

The x term is 0.7225433526x.  Take half its coefficient (0.3612716763).
Square it (0.1305172241) and add it to both sides.

Add '0.1305172241' to each side of the equation.
0.7225433526x + 0.1305172241 + x2 = 0.5 + 0.1305172241

Reorder the terms:
0.1305172241 + 0.7225433526x + x2 = 0.5 + 0.1305172241

Combine like terms: 0.5 + 0.1305172241 = 0.6305172241
0.1305172241 + 0.7225433526x + x2 = 0.6305172241

Factor a perfect square on the left side:
(x + 0.3612716763)(x + 0.3612716763) = 0.6305172241

Calculate the square root of the right side: 0.794051147

Break this problem into two subproblems by setting 
(x + 0.3612716763) equal to 0.794051147 and -0.794051147.

Subproblem 1

x + 0.3612716763 = 0.794051147 Simplifying x + 0.3612716763 = 0.794051147 Reorder the terms: 0.3612716763 + x = 0.794051147 Solving 0.3612716763 + x = 0.794051147 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3612716763' to each side of the equation. 0.3612716763 + -0.3612716763 + x = 0.794051147 + -0.3612716763 Combine like terms: 0.3612716763 + -0.3612716763 = 0.0000000000 0.0000000000 + x = 0.794051147 + -0.3612716763 x = 0.794051147 + -0.3612716763 Combine like terms: 0.794051147 + -0.3612716763 = 0.4327794707 x = 0.4327794707 Simplifying x = 0.4327794707

Subproblem 2

x + 0.3612716763 = -0.794051147 Simplifying x + 0.3612716763 = -0.794051147 Reorder the terms: 0.3612716763 + x = -0.794051147 Solving 0.3612716763 + x = -0.794051147 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3612716763' to each side of the equation. 0.3612716763 + -0.3612716763 + x = -0.794051147 + -0.3612716763 Combine like terms: 0.3612716763 + -0.3612716763 = 0.0000000000 0.0000000000 + x = -0.794051147 + -0.3612716763 x = -0.794051147 + -0.3612716763 Combine like terms: -0.794051147 + -0.3612716763 = -1.1553228233 x = -1.1553228233 Simplifying x = -1.1553228233

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.4327794707, -1.1553228233}

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