x^2-10x-37.5=0

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Solution for x^2-10x-37.5=0 equation:


Simplifying
x2 + -10x + -37.5 = 0

Reorder the terms:
-37.5 + -10x + x2 = 0

Solving
-37.5 + -10x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '37.5' to each side of the equation.
-37.5 + -10x + 37.5 + x2 = 0 + 37.5

Reorder the terms:
-37.5 + 37.5 + -10x + x2 = 0 + 37.5

Combine like terms: -37.5 + 37.5 = 0.0
0.0 + -10x + x2 = 0 + 37.5
-10x + x2 = 0 + 37.5

Combine like terms: 0 + 37.5 = 37.5
-10x + x2 = 37.5

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = 37.5 + 25

Reorder the terms:
25 + -10x + x2 = 37.5 + 25

Combine like terms: 37.5 + 25 = 62.5
25 + -10x + x2 = 62.5

Factor a perfect square on the left side:
(x + -5)(x + -5) = 62.5

Calculate the square root of the right side: 7.90569415

Break this problem into two subproblems by setting 
(x + -5) equal to 7.90569415 and -7.90569415.

Subproblem 1

x + -5 = 7.90569415 Simplifying x + -5 = 7.90569415 Reorder the terms: -5 + x = 7.90569415 Solving -5 + x = 7.90569415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 7.90569415 + 5 Combine like terms: -5 + 5 = 0 0 + x = 7.90569415 + 5 x = 7.90569415 + 5 Combine like terms: 7.90569415 + 5 = 12.90569415 x = 12.90569415 Simplifying x = 12.90569415

Subproblem 2

x + -5 = -7.90569415 Simplifying x + -5 = -7.90569415 Reorder the terms: -5 + x = -7.90569415 Solving -5 + x = -7.90569415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -7.90569415 + 5 Combine like terms: -5 + 5 = 0 0 + x = -7.90569415 + 5 x = -7.90569415 + 5 Combine like terms: -7.90569415 + 5 = -2.90569415 x = -2.90569415 Simplifying x = -2.90569415

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.90569415, -2.90569415}

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