x^2-10.5x+1=0

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Solution for x^2-10.5x+1=0 equation:


Simplifying
x2 + -10.5x + 1 = 0

Reorder the terms:
1 + -10.5x + x2 = 0

Solving
1 + -10.5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -10.5x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + -10.5x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -10.5x + x2 = 0 + -1
-10.5x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
-10.5x + x2 = -1

The x term is -10.5x.  Take half its coefficient (-5.25).
Square it (27.5625) and add it to both sides.

Add '27.5625' to each side of the equation.
-10.5x + 27.5625 + x2 = -1 + 27.5625

Reorder the terms:
27.5625 + -10.5x + x2 = -1 + 27.5625

Combine like terms: -1 + 27.5625 = 26.5625
27.5625 + -10.5x + x2 = 26.5625

Factor a perfect square on the left side:
(x + -5.25)(x + -5.25) = 26.5625

Calculate the square root of the right side: 5.153882032

Break this problem into two subproblems by setting 
(x + -5.25) equal to 5.153882032 and -5.153882032.

Subproblem 1

x + -5.25 = 5.153882032 Simplifying x + -5.25 = 5.153882032 Reorder the terms: -5.25 + x = 5.153882032 Solving -5.25 + x = 5.153882032 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.25' to each side of the equation. -5.25 + 5.25 + x = 5.153882032 + 5.25 Combine like terms: -5.25 + 5.25 = 0.00 0.00 + x = 5.153882032 + 5.25 x = 5.153882032 + 5.25 Combine like terms: 5.153882032 + 5.25 = 10.403882032 x = 10.403882032 Simplifying x = 10.403882032

Subproblem 2

x + -5.25 = -5.153882032 Simplifying x + -5.25 = -5.153882032 Reorder the terms: -5.25 + x = -5.153882032 Solving -5.25 + x = -5.153882032 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.25' to each side of the equation. -5.25 + 5.25 + x = -5.153882032 + 5.25 Combine like terms: -5.25 + 5.25 = 0.00 0.00 + x = -5.153882032 + 5.25 x = -5.153882032 + 5.25 Combine like terms: -5.153882032 + 5.25 = 0.096117968 x = 0.096117968 Simplifying x = 0.096117968

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.403882032, 0.096117968}

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