25-15x+x^2=0

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Solution for 25-15x+x^2=0 equation:


Simplifying
25 + -15x + x2 = 0

Solving
25 + -15x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-25' to each side of the equation.
25 + -15x + -25 + x2 = 0 + -25

Reorder the terms:
25 + -25 + -15x + x2 = 0 + -25

Combine like terms: 25 + -25 = 0
0 + -15x + x2 = 0 + -25
-15x + x2 = 0 + -25

Combine like terms: 0 + -25 = -25
-15x + x2 = -25

The x term is -15x.  Take half its coefficient (-7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
-15x + 56.25 + x2 = -25 + 56.25

Reorder the terms:
56.25 + -15x + x2 = -25 + 56.25

Combine like terms: -25 + 56.25 = 31.25
56.25 + -15x + x2 = 31.25

Factor a perfect square on the left side:
(x + -7.5)(x + -7.5) = 31.25

Calculate the square root of the right side: 5.590169944

Break this problem into two subproblems by setting 
(x + -7.5) equal to 5.590169944 and -5.590169944.

Subproblem 1

x + -7.5 = 5.590169944 Simplifying x + -7.5 = 5.590169944 Reorder the terms: -7.5 + x = 5.590169944 Solving -7.5 + x = 5.590169944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = 5.590169944 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = 5.590169944 + 7.5 x = 5.590169944 + 7.5 Combine like terms: 5.590169944 + 7.5 = 13.090169944 x = 13.090169944 Simplifying x = 13.090169944

Subproblem 2

x + -7.5 = -5.590169944 Simplifying x + -7.5 = -5.590169944 Reorder the terms: -7.5 + x = -5.590169944 Solving -7.5 + x = -5.590169944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + x = -5.590169944 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = -5.590169944 + 7.5 x = -5.590169944 + 7.5 Combine like terms: -5.590169944 + 7.5 = 1.909830056 x = 1.909830056 Simplifying x = 1.909830056

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.090169944, 1.909830056}

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