17x^2+92x-206=0

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Solution for 17x^2+92x-206=0 equation:


Simplifying
17x2 + 92x + -206 = 0

Reorder the terms:
-206 + 92x + 17x2 = 0

Solving
-206 + 92x + 17x2 = 0

Solving for variable 'x'.

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

Divide each side by '17'.
-12.11764706 + 5.411764706x + x2 = 0

Move the constant term to the right:

Add '12.11764706' to each side of the equation.
-12.11764706 + 5.411764706x + 12.11764706 + x2 = 0 + 12.11764706

Reorder the terms:
-12.11764706 + 12.11764706 + 5.411764706x + x2 = 0 + 12.11764706

Combine like terms: -12.11764706 + 12.11764706 = 0.00000000
0.00000000 + 5.411764706x + x2 = 0 + 12.11764706
5.411764706x + x2 = 0 + 12.11764706

Combine like terms: 0 + 12.11764706 = 12.11764706
5.411764706x + x2 = 12.11764706

The x term is 5.411764706x.  Take half its coefficient (2.705882353).
Square it (7.321799308) and add it to both sides.

Add '7.321799308' to each side of the equation.
5.411764706x + 7.321799308 + x2 = 12.11764706 + 7.321799308

Reorder the terms:
7.321799308 + 5.411764706x + x2 = 12.11764706 + 7.321799308

Combine like terms: 12.11764706 + 7.321799308 = 19.439446368
7.321799308 + 5.411764706x + x2 = 19.439446368

Factor a perfect square on the left side:
(x + 2.705882353)(x + 2.705882353) = 19.439446368

Calculate the square root of the right side: 4.409018753

Break this problem into two subproblems by setting 
(x + 2.705882353) equal to 4.409018753 and -4.409018753.

Subproblem 1

x + 2.705882353 = 4.409018753 Simplifying x + 2.705882353 = 4.409018753 Reorder the terms: 2.705882353 + x = 4.409018753 Solving 2.705882353 + x = 4.409018753 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.705882353' to each side of the equation. 2.705882353 + -2.705882353 + x = 4.409018753 + -2.705882353 Combine like terms: 2.705882353 + -2.705882353 = 0.000000000 0.000000000 + x = 4.409018753 + -2.705882353 x = 4.409018753 + -2.705882353 Combine like terms: 4.409018753 + -2.705882353 = 1.7031364 x = 1.7031364 Simplifying x = 1.7031364

Subproblem 2

x + 2.705882353 = -4.409018753 Simplifying x + 2.705882353 = -4.409018753 Reorder the terms: 2.705882353 + x = -4.409018753 Solving 2.705882353 + x = -4.409018753 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.705882353' to each side of the equation. 2.705882353 + -2.705882353 + x = -4.409018753 + -2.705882353 Combine like terms: 2.705882353 + -2.705882353 = 0.000000000 0.000000000 + x = -4.409018753 + -2.705882353 x = -4.409018753 + -2.705882353 Combine like terms: -4.409018753 + -2.705882353 = -7.114901106 x = -7.114901106 Simplifying x = -7.114901106

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.7031364, -7.114901106}

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