5x^2+3x-60=0

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Solution for 5x^2+3x-60=0 equation:


Simplifying
5x2 + 3x + -60 = 0

Reorder the terms:
-60 + 3x + 5x2 = 0

Solving
-60 + 3x + 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 + 0.6x + x2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + 0.6x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + 0.6x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 0.6x + x2 = 0 + 12
0.6x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
0.6x + x2 = 12

The x term is 0.6x.  Take half its coefficient (0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
0.6x + 0.09 + x2 = 12 + 0.09

Reorder the terms:
0.09 + 0.6x + x2 = 12 + 0.09

Combine like terms: 12 + 0.09 = 12.09
0.09 + 0.6x + x2 = 12.09

Factor a perfect square on the left side:
(x + 0.3)(x + 0.3) = 12.09

Calculate the square root of the right side: 3.47706773

Break this problem into two subproblems by setting 
(x + 0.3) equal to 3.47706773 and -3.47706773.

Subproblem 1

x + 0.3 = 3.47706773 Simplifying x + 0.3 = 3.47706773 Reorder the terms: 0.3 + x = 3.47706773 Solving 0.3 + x = 3.47706773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + x = 3.47706773 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + x = 3.47706773 + -0.3 x = 3.47706773 + -0.3 Combine like terms: 3.47706773 + -0.3 = 3.17706773 x = 3.17706773 Simplifying x = 3.17706773

Subproblem 2

x + 0.3 = -3.47706773 Simplifying x + 0.3 = -3.47706773 Reorder the terms: 0.3 + x = -3.47706773 Solving 0.3 + x = -3.47706773 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + x = -3.47706773 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + x = -3.47706773 + -0.3 x = -3.47706773 + -0.3 Combine like terms: -3.47706773 + -0.3 = -3.77706773 x = -3.77706773 Simplifying x = -3.77706773

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.17706773, -3.77706773}

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