x^2+12x-98=0

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Solution for x^2+12x-98=0 equation:


Simplifying
x2 + 12x + -98 = 0

Reorder the terms:
-98 + 12x + x2 = 0

Solving
-98 + 12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '98' to each side of the equation.
-98 + 12x + 98 + x2 = 0 + 98

Reorder the terms:
-98 + 98 + 12x + x2 = 0 + 98

Combine like terms: -98 + 98 = 0
0 + 12x + x2 = 0 + 98
12x + x2 = 0 + 98

Combine like terms: 0 + 98 = 98
12x + x2 = 98

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = 98 + 36

Reorder the terms:
36 + 12x + x2 = 98 + 36

Combine like terms: 98 + 36 = 134
36 + 12x + x2 = 134

Factor a perfect square on the left side:
(x + 6)(x + 6) = 134

Calculate the square root of the right side: 11.575836903

Break this problem into two subproblems by setting 
(x + 6) equal to 11.575836903 and -11.575836903.

Subproblem 1

x + 6 = 11.575836903 Simplifying x + 6 = 11.575836903 Reorder the terms: 6 + x = 11.575836903 Solving 6 + x = 11.575836903 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 11.575836903 + -6 Combine like terms: 6 + -6 = 0 0 + x = 11.575836903 + -6 x = 11.575836903 + -6 Combine like terms: 11.575836903 + -6 = 5.575836903 x = 5.575836903 Simplifying x = 5.575836903

Subproblem 2

x + 6 = -11.575836903 Simplifying x + 6 = -11.575836903 Reorder the terms: 6 + x = -11.575836903 Solving 6 + x = -11.575836903 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -11.575836903 + -6 Combine like terms: 6 + -6 = 0 0 + x = -11.575836903 + -6 x = -11.575836903 + -6 Combine like terms: -11.575836903 + -6 = -17.575836903 x = -17.575836903 Simplifying x = -17.575836903

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.575836903, -17.575836903}

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