25x^2-60x=-31

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Solution for 25x^2-60x=-31 equation:


Simplifying
25x2 + -60x = -31

Reorder the terms:
-60x + 25x2 = -31

Solving
-60x + 25x2 = -31

Solving for variable 'x'.

Reorder the terms:
31 + -60x + 25x2 = -31 + 31

Combine like terms: -31 + 31 = 0
31 + -60x + 25x2 = 0

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

Divide each side by '25'.
1.24 + -2.4x + x2 = 0

Move the constant term to the right:

Add '-1.24' to each side of the equation.
1.24 + -2.4x + -1.24 + x2 = 0 + -1.24

Reorder the terms:
1.24 + -1.24 + -2.4x + x2 = 0 + -1.24

Combine like terms: 1.24 + -1.24 = 0.00
0.00 + -2.4x + x2 = 0 + -1.24
-2.4x + x2 = 0 + -1.24

Combine like terms: 0 + -1.24 = -1.24
-2.4x + x2 = -1.24

The x term is -2.4x.  Take half its coefficient (-1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
-2.4x + 1.44 + x2 = -1.24 + 1.44

Reorder the terms:
1.44 + -2.4x + x2 = -1.24 + 1.44

Combine like terms: -1.24 + 1.44 = 0.2
1.44 + -2.4x + x2 = 0.2

Factor a perfect square on the left side:
(x + -1.2)(x + -1.2) = 0.2

Calculate the square root of the right side: 0.447213596

Break this problem into two subproblems by setting 
(x + -1.2) equal to 0.447213596 and -0.447213596.

Subproblem 1

x + -1.2 = 0.447213596 Simplifying x + -1.2 = 0.447213596 Reorder the terms: -1.2 + x = 0.447213596 Solving -1.2 + x = 0.447213596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.2' to each side of the equation. -1.2 + 1.2 + x = 0.447213596 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + x = 0.447213596 + 1.2 x = 0.447213596 + 1.2 Combine like terms: 0.447213596 + 1.2 = 1.647213596 x = 1.647213596 Simplifying x = 1.647213596

Subproblem 2

x + -1.2 = -0.447213596 Simplifying x + -1.2 = -0.447213596 Reorder the terms: -1.2 + x = -0.447213596 Solving -1.2 + x = -0.447213596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.2' to each side of the equation. -1.2 + 1.2 + x = -0.447213596 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + x = -0.447213596 + 1.2 x = -0.447213596 + 1.2 Combine like terms: -0.447213596 + 1.2 = 0.752786404 x = 0.752786404 Simplifying x = 0.752786404

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.647213596, 0.752786404}

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