12x^2-28x-60=0

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Solution for 12x^2-28x-60=0 equation:


Simplifying
12x2 + -28x + -60 = 0

Reorder the terms:
-60 + -28x + 12x2 = 0

Solving
-60 + -28x + 12x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4'.
4(-15 + -7x + 3x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-15 + -7x + 3x2)' equal to zero and attempt to solve: Simplifying -15 + -7x + 3x2 = 0 Solving -15 + -7x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -5 + -2.333333333x + x2 = 0 Move the constant term to the right: Add '5' to each side of the equation. -5 + -2.333333333x + 5 + x2 = 0 + 5 Reorder the terms: -5 + 5 + -2.333333333x + x2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2.333333333x + x2 = 0 + 5 -2.333333333x + x2 = 0 + 5 Combine like terms: 0 + 5 = 5 -2.333333333x + x2 = 5 The x term is -2.333333333x. Take half its coefficient (-1.166666667). Square it (1.361111112) and add it to both sides. Add '1.361111112' to each side of the equation. -2.333333333x + 1.361111112 + x2 = 5 + 1.361111112 Reorder the terms: 1.361111112 + -2.333333333x + x2 = 5 + 1.361111112 Combine like terms: 5 + 1.361111112 = 6.361111112 1.361111112 + -2.333333333x + x2 = 6.361111112 Factor a perfect square on the left side: (x + -1.166666667)(x + -1.166666667) = 6.361111112 Calculate the square root of the right side: 2.522124325 Break this problem into two subproblems by setting (x + -1.166666667) equal to 2.522124325 and -2.522124325.

Subproblem 1

x + -1.166666667 = 2.522124325 Simplifying x + -1.166666667 = 2.522124325 Reorder the terms: -1.166666667 + x = 2.522124325 Solving -1.166666667 + x = 2.522124325 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + x = 2.522124325 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = 2.522124325 + 1.166666667 x = 2.522124325 + 1.166666667 Combine like terms: 2.522124325 + 1.166666667 = 3.688790992 x = 3.688790992 Simplifying x = 3.688790992

Subproblem 2

x + -1.166666667 = -2.522124325 Simplifying x + -1.166666667 = -2.522124325 Reorder the terms: -1.166666667 + x = -2.522124325 Solving -1.166666667 + x = -2.522124325 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + x = -2.522124325 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + x = -2.522124325 + 1.166666667 x = -2.522124325 + 1.166666667 Combine like terms: -2.522124325 + 1.166666667 = -1.355457658 x = -1.355457658 Simplifying x = -1.355457658

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.688790992, -1.355457658}

Solution

x = {3.688790992, -1.355457658}

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