x^2+1.67x-19.02=0

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Solution for x^2+1.67x-19.02=0 equation:


Simplifying
x2 + 1.67x + -19.02 = 0

Reorder the terms:
-19.02 + 1.67x + x2 = 0

Solving
-19.02 + 1.67x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '19.02' to each side of the equation.
-19.02 + 1.67x + 19.02 + x2 = 0 + 19.02

Reorder the terms:
-19.02 + 19.02 + 1.67x + x2 = 0 + 19.02

Combine like terms: -19.02 + 19.02 = 0.00
0.00 + 1.67x + x2 = 0 + 19.02
1.67x + x2 = 0 + 19.02

Combine like terms: 0 + 19.02 = 19.02
1.67x + x2 = 19.02

The x term is 1.67x.  Take half its coefficient (0.835).
Square it (0.697225) and add it to both sides.

Add '0.697225' to each side of the equation.
1.67x + 0.697225 + x2 = 19.02 + 0.697225

Reorder the terms:
0.697225 + 1.67x + x2 = 19.02 + 0.697225

Combine like terms: 19.02 + 0.697225 = 19.717225
0.697225 + 1.67x + x2 = 19.717225

Factor a perfect square on the left side:
(x + 0.835)(x + 0.835) = 19.717225

Calculate the square root of the right side: 4.440408202

Break this problem into two subproblems by setting 
(x + 0.835) equal to 4.440408202 and -4.440408202.

Subproblem 1

x + 0.835 = 4.440408202 Simplifying x + 0.835 = 4.440408202 Reorder the terms: 0.835 + x = 4.440408202 Solving 0.835 + x = 4.440408202 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.835' to each side of the equation. 0.835 + -0.835 + x = 4.440408202 + -0.835 Combine like terms: 0.835 + -0.835 = 0.000 0.000 + x = 4.440408202 + -0.835 x = 4.440408202 + -0.835 Combine like terms: 4.440408202 + -0.835 = 3.605408202 x = 3.605408202 Simplifying x = 3.605408202

Subproblem 2

x + 0.835 = -4.440408202 Simplifying x + 0.835 = -4.440408202 Reorder the terms: 0.835 + x = -4.440408202 Solving 0.835 + x = -4.440408202 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.835' to each side of the equation. 0.835 + -0.835 + x = -4.440408202 + -0.835 Combine like terms: 0.835 + -0.835 = 0.000 0.000 + x = -4.440408202 + -0.835 x = -4.440408202 + -0.835 Combine like terms: -4.440408202 + -0.835 = -5.275408202 x = -5.275408202 Simplifying x = -5.275408202

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.605408202, -5.275408202}

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