60x^2-77x-12=0

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Solution for 60x^2-77x-12=0 equation:


Simplifying
60x2 + -77x + -12 = 0

Reorder the terms:
-12 + -77x + 60x2 = 0

Solving
-12 + -77x + 60x2 = 0

Solving for variable 'x'.

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

Divide each side by '60'.
-0.2 + -1.283333333x + x2 = 0

Move the constant term to the right:

Add '0.2' to each side of the equation.
-0.2 + -1.283333333x + 0.2 + x2 = 0 + 0.2

Reorder the terms:
-0.2 + 0.2 + -1.283333333x + x2 = 0 + 0.2

Combine like terms: -0.2 + 0.2 = 0.0
0.0 + -1.283333333x + x2 = 0 + 0.2
-1.283333333x + x2 = 0 + 0.2

Combine like terms: 0 + 0.2 = 0.2
-1.283333333x + x2 = 0.2

The x term is -1.283333333x.  Take half its coefficient (-0.6416666665).
Square it (0.4117361109) and add it to both sides.

Add '0.4117361109' to each side of the equation.
-1.283333333x + 0.4117361109 + x2 = 0.2 + 0.4117361109

Reorder the terms:
0.4117361109 + -1.283333333x + x2 = 0.2 + 0.4117361109

Combine like terms: 0.2 + 0.4117361109 = 0.6117361109
0.4117361109 + -1.283333333x + x2 = 0.6117361109

Factor a perfect square on the left side:
(x + -0.6416666665)(x + -0.6416666665) = 0.6117361109

Calculate the square root of the right side: 0.782135609

Break this problem into two subproblems by setting 
(x + -0.6416666665) equal to 0.782135609 and -0.782135609.

Subproblem 1

x + -0.6416666665 = 0.782135609 Simplifying x + -0.6416666665 = 0.782135609 Reorder the terms: -0.6416666665 + x = 0.782135609 Solving -0.6416666665 + x = 0.782135609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6416666665' to each side of the equation. -0.6416666665 + 0.6416666665 + x = 0.782135609 + 0.6416666665 Combine like terms: -0.6416666665 + 0.6416666665 = 0.0000000000 0.0000000000 + x = 0.782135609 + 0.6416666665 x = 0.782135609 + 0.6416666665 Combine like terms: 0.782135609 + 0.6416666665 = 1.4238022755 x = 1.4238022755 Simplifying x = 1.4238022755

Subproblem 2

x + -0.6416666665 = -0.782135609 Simplifying x + -0.6416666665 = -0.782135609 Reorder the terms: -0.6416666665 + x = -0.782135609 Solving -0.6416666665 + x = -0.782135609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6416666665' to each side of the equation. -0.6416666665 + 0.6416666665 + x = -0.782135609 + 0.6416666665 Combine like terms: -0.6416666665 + 0.6416666665 = 0.0000000000 0.0000000000 + x = -0.782135609 + 0.6416666665 x = -0.782135609 + 0.6416666665 Combine like terms: -0.782135609 + 0.6416666665 = -0.1404689425 x = -0.1404689425 Simplifying x = -0.1404689425

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.4238022755, -0.1404689425}

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