9x^2+2476x-246=258

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Solution for 9x^2+2476x-246=258 equation:


Simplifying
9x2 + 2476x + -246 = 258

Reorder the terms:
-246 + 2476x + 9x2 = 258

Solving
-246 + 2476x + 9x2 = 258

Solving for variable 'x'.

Reorder the terms:
-246 + -258 + 2476x + 9x2 = 258 + -258

Combine like terms: -246 + -258 = -504
-504 + 2476x + 9x2 = 258 + -258

Combine like terms: 258 + -258 = 0
-504 + 2476x + 9x2 = 0

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

Divide each side by '9'.
-56 + 275.1111111x + x2 = 0

Move the constant term to the right:

Add '56' to each side of the equation.
-56 + 275.1111111x + 56 + x2 = 0 + 56

Reorder the terms:
-56 + 56 + 275.1111111x + x2 = 0 + 56

Combine like terms: -56 + 56 = 0
0 + 275.1111111x + x2 = 0 + 56
275.1111111x + x2 = 0 + 56

Combine like terms: 0 + 56 = 56
275.1111111x + x2 = 56

The x term is 275.1111111x.  Take half its coefficient (137.5555556).
Square it (18921.53088) and add it to both sides.

Add '18921.53088' to each side of the equation.
275.1111111x + 18921.53088 + x2 = 56 + 18921.53088

Reorder the terms:
18921.53088 + 275.1111111x + x2 = 56 + 18921.53088

Combine like terms: 56 + 18921.53088 = 18977.53088
18921.53088 + 275.1111111x + x2 = 18977.53088

Factor a perfect square on the left side:
(x + 137.5555556)(x + 137.5555556) = 18977.53088

Calculate the square root of the right side: 137.758959346

Break this problem into two subproblems by setting 
(x + 137.5555556) equal to 137.758959346 and -137.758959346.

Subproblem 1

x + 137.5555556 = 137.758959346 Simplifying x + 137.5555556 = 137.758959346 Reorder the terms: 137.5555556 + x = 137.758959346 Solving 137.5555556 + x = 137.758959346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-137.5555556' to each side of the equation. 137.5555556 + -137.5555556 + x = 137.758959346 + -137.5555556 Combine like terms: 137.5555556 + -137.5555556 = 0.0000000 0.0000000 + x = 137.758959346 + -137.5555556 x = 137.758959346 + -137.5555556 Combine like terms: 137.758959346 + -137.5555556 = 0.203403746 x = 0.203403746 Simplifying x = 0.203403746

Subproblem 2

x + 137.5555556 = -137.758959346 Simplifying x + 137.5555556 = -137.758959346 Reorder the terms: 137.5555556 + x = -137.758959346 Solving 137.5555556 + x = -137.758959346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-137.5555556' to each side of the equation. 137.5555556 + -137.5555556 + x = -137.758959346 + -137.5555556 Combine like terms: 137.5555556 + -137.5555556 = 0.0000000 0.0000000 + x = -137.758959346 + -137.5555556 x = -137.758959346 + -137.5555556 Combine like terms: -137.758959346 + -137.5555556 = -275.314514946 x = -275.314514946 Simplifying x = -275.314514946

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.203403746, -275.314514946}

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