33x^2+15x-17=0

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Solution for 33x^2+15x-17=0 equation:


Simplifying
33x2 + 15x + -17 = 0

Reorder the terms:
-17 + 15x + 33x2 = 0

Solving
-17 + 15x + 33x2 = 0

Solving for variable 'x'.

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

Divide each side by '33'.
-0.5151515152 + 0.4545454545x + x2 = 0

Move the constant term to the right:

Add '0.5151515152' to each side of the equation.
-0.5151515152 + 0.4545454545x + 0.5151515152 + x2 = 0 + 0.5151515152

Reorder the terms:
-0.5151515152 + 0.5151515152 + 0.4545454545x + x2 = 0 + 0.5151515152

Combine like terms: -0.5151515152 + 0.5151515152 = 0.0000000000
0.0000000000 + 0.4545454545x + x2 = 0 + 0.5151515152
0.4545454545x + x2 = 0 + 0.5151515152

Combine like terms: 0 + 0.5151515152 = 0.5151515152
0.4545454545x + x2 = 0.5151515152

The x term is 0.4545454545x.  Take half its coefficient (0.2272727273).
Square it (0.05165289257) and add it to both sides.

Add '0.05165289257' to each side of the equation.
0.4545454545x + 0.05165289257 + x2 = 0.5151515152 + 0.05165289257

Reorder the terms:
0.05165289257 + 0.4545454545x + x2 = 0.5151515152 + 0.05165289257

Combine like terms: 0.5151515152 + 0.05165289257 = 0.56680440777
0.05165289257 + 0.4545454545x + x2 = 0.56680440777

Factor a perfect square on the left side:
(x + 0.2272727273)(x + 0.2272727273) = 0.56680440777

Calculate the square root of the right side: 0.752864136

Break this problem into two subproblems by setting 
(x + 0.2272727273) equal to 0.752864136 and -0.752864136.

Subproblem 1

x + 0.2272727273 = 0.752864136 Simplifying x + 0.2272727273 = 0.752864136 Reorder the terms: 0.2272727273 + x = 0.752864136 Solving 0.2272727273 + x = 0.752864136 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2272727273' to each side of the equation. 0.2272727273 + -0.2272727273 + x = 0.752864136 + -0.2272727273 Combine like terms: 0.2272727273 + -0.2272727273 = 0.0000000000 0.0000000000 + x = 0.752864136 + -0.2272727273 x = 0.752864136 + -0.2272727273 Combine like terms: 0.752864136 + -0.2272727273 = 0.5255914087 x = 0.5255914087 Simplifying x = 0.5255914087

Subproblem 2

x + 0.2272727273 = -0.752864136 Simplifying x + 0.2272727273 = -0.752864136 Reorder the terms: 0.2272727273 + x = -0.752864136 Solving 0.2272727273 + x = -0.752864136 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2272727273' to each side of the equation. 0.2272727273 + -0.2272727273 + x = -0.752864136 + -0.2272727273 Combine like terms: 0.2272727273 + -0.2272727273 = 0.0000000000 0.0000000000 + x = -0.752864136 + -0.2272727273 x = -0.752864136 + -0.2272727273 Combine like terms: -0.752864136 + -0.2272727273 = -0.9801368633 x = -0.9801368633 Simplifying x = -0.9801368633

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.5255914087, -0.9801368633}

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