42x^2-482x-2459=0

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Solution for 42x^2-482x-2459=0 equation:


Simplifying
42x2 + -482x + -2459 = 0

Reorder the terms:
-2459 + -482x + 42x2 = 0

Solving
-2459 + -482x + 42x2 = 0

Solving for variable 'x'.

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

Divide each side by '42'.
-58.54761905 + -11.47619048x + x2 = 0

Move the constant term to the right:

Add '58.54761905' to each side of the equation.
-58.54761905 + -11.47619048x + 58.54761905 + x2 = 0 + 58.54761905

Reorder the terms:
-58.54761905 + 58.54761905 + -11.47619048x + x2 = 0 + 58.54761905

Combine like terms: -58.54761905 + 58.54761905 = 0.00000000
0.00000000 + -11.47619048x + x2 = 0 + 58.54761905
-11.47619048x + x2 = 0 + 58.54761905

Combine like terms: 0 + 58.54761905 = 58.54761905
-11.47619048x + x2 = 58.54761905

The x term is -11.47619048x.  Take half its coefficient (-5.73809524).
Square it (32.92573698) and add it to both sides.

Add '32.92573698' to each side of the equation.
-11.47619048x + 32.92573698 + x2 = 58.54761905 + 32.92573698

Reorder the terms:
32.92573698 + -11.47619048x + x2 = 58.54761905 + 32.92573698

Combine like terms: 58.54761905 + 32.92573698 = 91.47335603
32.92573698 + -11.47619048x + x2 = 91.47335603

Factor a perfect square on the left side:
(x + -5.73809524)(x + -5.73809524) = 91.47335603

Calculate the square root of the right side: 9.564170431

Break this problem into two subproblems by setting 
(x + -5.73809524) equal to 9.564170431 and -9.564170431.

Subproblem 1

x + -5.73809524 = 9.564170431 Simplifying x + -5.73809524 = 9.564170431 Reorder the terms: -5.73809524 + x = 9.564170431 Solving -5.73809524 + x = 9.564170431 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.73809524' to each side of the equation. -5.73809524 + 5.73809524 + x = 9.564170431 + 5.73809524 Combine like terms: -5.73809524 + 5.73809524 = 0.00000000 0.00000000 + x = 9.564170431 + 5.73809524 x = 9.564170431 + 5.73809524 Combine like terms: 9.564170431 + 5.73809524 = 15.302265671 x = 15.302265671 Simplifying x = 15.302265671

Subproblem 2

x + -5.73809524 = -9.564170431 Simplifying x + -5.73809524 = -9.564170431 Reorder the terms: -5.73809524 + x = -9.564170431 Solving -5.73809524 + x = -9.564170431 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.73809524' to each side of the equation. -5.73809524 + 5.73809524 + x = -9.564170431 + 5.73809524 Combine like terms: -5.73809524 + 5.73809524 = 0.00000000 0.00000000 + x = -9.564170431 + 5.73809524 x = -9.564170431 + 5.73809524 Combine like terms: -9.564170431 + 5.73809524 = -3.826075191 x = -3.826075191 Simplifying x = -3.826075191

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.302265671, -3.826075191}

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