(12x^2)-7x-98=0

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Solution for (12x^2)-7x-98=0 equation:


Simplifying
(12x2) + -7x + -98 = 0

Reorder the terms:
-98 + -7x + (12x2) = 0

Solving
-98 + -7x + (12x2) = 0

Solving for variable 'x'.

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

Divide each side by '12'.
-8.166666667 + -0.5833333333x + x2 = 0

Move the constant term to the right:

Add '8.166666667' to each side of the equation.
-8.166666667 + -0.5833333333x + 8.166666667 + x2 = 0 + 8.166666667

Reorder the terms:
-8.166666667 + 8.166666667 + -0.5833333333x + x2 = 0 + 8.166666667

Combine like terms: -8.166666667 + 8.166666667 = 0.000000000
0.000000000 + -0.5833333333x + x2 = 0 + 8.166666667
-0.5833333333x + x2 = 0 + 8.166666667

Combine like terms: 0 + 8.166666667 = 8.166666667
-0.5833333333x + x2 = 8.166666667

The x term is -0.5833333333x.  Take half its coefficient (-0.2916666667).
Square it (0.08506944446) and add it to both sides.

Add '0.08506944446' to each side of the equation.
-0.5833333333x + 0.08506944446 + x2 = 8.166666667 + 0.08506944446

Reorder the terms:
0.08506944446 + -0.5833333333x + x2 = 8.166666667 + 0.08506944446

Combine like terms: 8.166666667 + 0.08506944446 = 8.25173611146
0.08506944446 + -0.5833333333x + x2 = 8.25173611146

Factor a perfect square on the left side:
((x) + -0.2916666667)((x) + -0.2916666667) = 8.25173611146

Calculate the square root of the right side: 2.872583526

Break this problem into two subproblems by setting 
((x) + -0.2916666667) equal to 2.872583526 and -2.872583526.

Subproblem 1

(x) + -0.2916666667 = 2.872583526 Simplifying (x) + -0.2916666667 = 2.872583526 x + -0.2916666667 = 2.872583526 Reorder the terms: -0.2916666667 + x = 2.872583526 Solving -0.2916666667 + x = 2.872583526 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2916666667' to each side of the equation. -0.2916666667 + 0.2916666667 + x = 2.872583526 + 0.2916666667 Combine like terms: -0.2916666667 + 0.2916666667 = 0.0000000000 0.0000000000 + x = 2.872583526 + 0.2916666667 x = 2.872583526 + 0.2916666667 Combine like terms: 2.872583526 + 0.2916666667 = 3.1642501927 x = 3.1642501927 Simplifying x = 3.1642501927

Subproblem 2

(x) + -0.2916666667 = -2.872583526 Simplifying (x) + -0.2916666667 = -2.872583526 x + -0.2916666667 = -2.872583526 Reorder the terms: -0.2916666667 + x = -2.872583526 Solving -0.2916666667 + x = -2.872583526 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2916666667' to each side of the equation. -0.2916666667 + 0.2916666667 + x = -2.872583526 + 0.2916666667 Combine like terms: -0.2916666667 + 0.2916666667 = 0.0000000000 0.0000000000 + x = -2.872583526 + 0.2916666667 x = -2.872583526 + 0.2916666667 Combine like terms: -2.872583526 + 0.2916666667 = -2.5809168593 x = -2.5809168593 Simplifying x = -2.5809168593

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.1642501927, -2.5809168593}

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