2x+3=91x^2

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Solution for 2x+3=91x^2 equation:


Simplifying
2x + 3 = 91x2

Reorder the terms:
3 + 2x = 91x2

Solving
3 + 2x = 91x2

Solving for variable 'x'.

Combine like terms: 91x2 + -91x2 = 0
3 + 2x + -91x2 = 0

Begin completing the square.  Divide all terms by
-91 the coefficient of the squared term: 

Divide each side by '-91'.
-0.03296703297 + -0.02197802198x + x2 = 0

Move the constant term to the right:

Add '0.03296703297' to each side of the equation.
-0.03296703297 + -0.02197802198x + 0.03296703297 + x2 = 0 + 0.03296703297

Reorder the terms:
-0.03296703297 + 0.03296703297 + -0.02197802198x + x2 = 0 + 0.03296703297

Combine like terms: -0.03296703297 + 0.03296703297 = 0.00000000000
0.00000000000 + -0.02197802198x + x2 = 0 + 0.03296703297
-0.02197802198x + x2 = 0 + 0.03296703297

Combine like terms: 0 + 0.03296703297 = 0.03296703297
-0.02197802198x + x2 = 0.03296703297

The x term is -0.02197802198x.  Take half its coefficient (-0.01098901099).
Square it (0.0001207583625) and add it to both sides.

Add '0.0001207583625' to each side of the equation.
-0.02197802198x + 0.0001207583625 + x2 = 0.03296703297 + 0.0001207583625

Reorder the terms:
0.0001207583625 + -0.02197802198x + x2 = 0.03296703297 + 0.0001207583625

Combine like terms: 0.03296703297 + 0.0001207583625 = 0.0330877913325
0.0001207583625 + -0.02197802198x + x2 = 0.0330877913325

Factor a perfect square on the left side:
(x + -0.01098901099)(x + -0.01098901099) = 0.0330877913325

Calculate the square root of the right side: 0.181900498

Break this problem into two subproblems by setting 
(x + -0.01098901099) equal to 0.181900498 and -0.181900498.

Subproblem 1

x + -0.01098901099 = 0.181900498 Simplifying x + -0.01098901099 = 0.181900498 Reorder the terms: -0.01098901099 + x = 0.181900498 Solving -0.01098901099 + x = 0.181900498 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.01098901099' to each side of the equation. -0.01098901099 + 0.01098901099 + x = 0.181900498 + 0.01098901099 Combine like terms: -0.01098901099 + 0.01098901099 = 0.00000000000 0.00000000000 + x = 0.181900498 + 0.01098901099 x = 0.181900498 + 0.01098901099 Combine like terms: 0.181900498 + 0.01098901099 = 0.19288950899 x = 0.19288950899 Simplifying x = 0.19288950899

Subproblem 2

x + -0.01098901099 = -0.181900498 Simplifying x + -0.01098901099 = -0.181900498 Reorder the terms: -0.01098901099 + x = -0.181900498 Solving -0.01098901099 + x = -0.181900498 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.01098901099' to each side of the equation. -0.01098901099 + 0.01098901099 + x = -0.181900498 + 0.01098901099 Combine like terms: -0.01098901099 + 0.01098901099 = 0.00000000000 0.00000000000 + x = -0.181900498 + 0.01098901099 x = -0.181900498 + 0.01098901099 Combine like terms: -0.181900498 + 0.01098901099 = -0.17091148701 x = -0.17091148701 Simplifying x = -0.17091148701

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.19288950899, -0.17091148701}

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