x^2+-15x+56.25=0

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Solution for x^2+-15x+56.25=0 equation:


Simplifying
x2 + -15x + 56.25 = 0

Reorder the terms:
56.25 + -15x + x2 = 0

Solving
56.25 + -15x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-56.25' to each side of the equation.
56.25 + -15x + -56.25 + x2 = 0 + -56.25

Reorder the terms:
56.25 + -56.25 + -15x + x2 = 0 + -56.25

Combine like terms: 56.25 + -56.25 = 0.00
0.00 + -15x + x2 = 0 + -56.25
-15x + x2 = 0 + -56.25

Combine like terms: 0 + -56.25 = -56.25
-15x + x2 = -56.25

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 = -56.25 + 56.25

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

Combine like terms: -56.25 + 56.25 = 0.00
56.25 + -15x + x2 = 0.00

Factor a perfect square on the left side:
(x + -7.5)(x + -7.5) = 0.00

Calculate the square root of the right side: 0.00

Break this problem into two subproblems by setting 
(x + -7.5) equal to 0.00 and 0.00.

Subproblem 1

x + -7.5 = 0.00 Simplifying x + -7.5 = 0.00 Reorder the terms: -7.5 + x = 0.00 Solving -7.5 + x = 0.00 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 = 0.00 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = 0.00 + 7.5 x = 0.00 + 7.5 Combine like terms: 0.00 + 7.5 = 7.5 x = 7.5 Simplifying x = 7.5

Subproblem 2

x + -7.5 = 0.00 Simplifying x + -7.5 = 0.00 Reorder the terms: -7.5 + x = 0.00 Solving -7.5 + x = 0.00 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 = 0.00 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + x = 0.00 + 7.5 x = 0.00 + 7.5 Combine like terms: 0.00 + 7.5 = 7.5 x = 7.5 Simplifying x = 7.5

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.5, 7.5}

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