91x^2+2367x-4=3849020

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Solution for 91x^2+2367x-4=3849020 equation:


Simplifying
91x2 + 2367x + -4 = 3849020

Reorder the terms:
-4 + 2367x + 91x2 = 3849020

Solving
-4 + 2367x + 91x2 = 3849020

Solving for variable 'x'.

Reorder the terms:
-4 + -3849020 + 2367x + 91x2 = 3849020 + -3849020

Combine like terms: -4 + -3849020 = -3849024
-3849024 + 2367x + 91x2 = 3849020 + -3849020

Combine like terms: 3849020 + -3849020 = 0
-3849024 + 2367x + 91x2 = 0

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

Divide each side by '91'.
-42296.96703 + 26.01098901x + x2 = 0

Move the constant term to the right:

Add '42296.96703' to each side of the equation.
-42296.96703 + 26.01098901x + 42296.96703 + x2 = 0 + 42296.96703

Reorder the terms:
-42296.96703 + 42296.96703 + 26.01098901x + x2 = 0 + 42296.96703

Combine like terms: -42296.96703 + 42296.96703 = 0.00000
0.00000 + 26.01098901x + x2 = 0 + 42296.96703
26.01098901x + x2 = 0 + 42296.96703

Combine like terms: 0 + 42296.96703 = 42296.96703
26.01098901x + x2 = 42296.96703

The x term is 26.01098901x.  Take half its coefficient (13.00549451).
Square it (169.1428875) and add it to both sides.

Add '169.1428875' to each side of the equation.
26.01098901x + 169.1428875 + x2 = 42296.96703 + 169.1428875

Reorder the terms:
169.1428875 + 26.01098901x + x2 = 42296.96703 + 169.1428875

Combine like terms: 42296.96703 + 169.1428875 = 42466.1099175
169.1428875 + 26.01098901x + x2 = 42466.1099175

Factor a perfect square on the left side:
(x + 13.00549451)(x + 13.00549451) = 42466.1099175

Calculate the square root of the right side: 206.073069365

Break this problem into two subproblems by setting 
(x + 13.00549451) equal to 206.073069365 and -206.073069365.

Subproblem 1

x + 13.00549451 = 206.073069365 Simplifying x + 13.00549451 = 206.073069365 Reorder the terms: 13.00549451 + x = 206.073069365 Solving 13.00549451 + x = 206.073069365 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13.00549451' to each side of the equation. 13.00549451 + -13.00549451 + x = 206.073069365 + -13.00549451 Combine like terms: 13.00549451 + -13.00549451 = 0.00000000 0.00000000 + x = 206.073069365 + -13.00549451 x = 206.073069365 + -13.00549451 Combine like terms: 206.073069365 + -13.00549451 = 193.067574855 x = 193.067574855 Simplifying x = 193.067574855

Subproblem 2

x + 13.00549451 = -206.073069365 Simplifying x + 13.00549451 = -206.073069365 Reorder the terms: 13.00549451 + x = -206.073069365 Solving 13.00549451 + x = -206.073069365 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13.00549451' to each side of the equation. 13.00549451 + -13.00549451 + x = -206.073069365 + -13.00549451 Combine like terms: 13.00549451 + -13.00549451 = 0.00000000 0.00000000 + x = -206.073069365 + -13.00549451 x = -206.073069365 + -13.00549451 Combine like terms: -206.073069365 + -13.00549451 = -219.078563875 x = -219.078563875 Simplifying x = -219.078563875

Solution

The solution to the problem is based on the solutions from the subproblems. x = {193.067574855, -219.078563875}

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