5x^2+6x-60=0

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Solution for 5x^2+6x-60=0 equation:


Simplifying
5x2 + 6x + -60 = 0

Reorder the terms:
-60 + 6x + 5x2 = 0

Solving
-60 + 6x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-12 + 1.2x + x2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + 1.2x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + 1.2x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 1.2x + x2 = 0 + 12
1.2x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
1.2x + x2 = 12

The x term is 1.2x.  Take half its coefficient (0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
1.2x + 0.36 + x2 = 12 + 0.36

Reorder the terms:
0.36 + 1.2x + x2 = 12 + 0.36

Combine like terms: 12 + 0.36 = 12.36
0.36 + 1.2x + x2 = 12.36

Factor a perfect square on the left side:
(x + 0.6)(x + 0.6) = 12.36

Calculate the square root of the right side: 3.515679166

Break this problem into two subproblems by setting 
(x + 0.6) equal to 3.515679166 and -3.515679166.

Subproblem 1

x + 0.6 = 3.515679166 Simplifying x + 0.6 = 3.515679166 Reorder the terms: 0.6 + x = 3.515679166 Solving 0.6 + x = 3.515679166 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + x = 3.515679166 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + x = 3.515679166 + -0.6 x = 3.515679166 + -0.6 Combine like terms: 3.515679166 + -0.6 = 2.915679166 x = 2.915679166 Simplifying x = 2.915679166

Subproblem 2

x + 0.6 = -3.515679166 Simplifying x + 0.6 = -3.515679166 Reorder the terms: 0.6 + x = -3.515679166 Solving 0.6 + x = -3.515679166 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + x = -3.515679166 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + x = -3.515679166 + -0.6 x = -3.515679166 + -0.6 Combine like terms: -3.515679166 + -0.6 = -4.115679166 x = -4.115679166 Simplifying x = -4.115679166

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.915679166, -4.115679166}

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