(x-10)(x-10)=12

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Solution for (x-10)(x-10)=12 equation:


Simplifying
(x + -10)(x + -10) = 12

Reorder the terms:
(-10 + x)(x + -10) = 12

Reorder the terms:
(-10 + x)(-10 + x) = 12

Multiply (-10 + x) * (-10 + x)
(-10(-10 + x) + x(-10 + x)) = 12
((-10 * -10 + x * -10) + x(-10 + x)) = 12
((100 + -10x) + x(-10 + x)) = 12
(100 + -10x + (-10 * x + x * x)) = 12
(100 + -10x + (-10x + x2)) = 12

Combine like terms: -10x + -10x = -20x
(100 + -20x + x2) = 12

Solving
100 + -20x + x2 = 12

Solving for variable 'x'.

Reorder the terms:
100 + -12 + -20x + x2 = 12 + -12

Combine like terms: 100 + -12 = 88
88 + -20x + x2 = 12 + -12

Combine like terms: 12 + -12 = 0
88 + -20x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-88' to each side of the equation.
88 + -20x + -88 + x2 = 0 + -88

Reorder the terms:
88 + -88 + -20x + x2 = 0 + -88

Combine like terms: 88 + -88 = 0
0 + -20x + x2 = 0 + -88
-20x + x2 = 0 + -88

Combine like terms: 0 + -88 = -88
-20x + x2 = -88

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = -88 + 100

Reorder the terms:
100 + -20x + x2 = -88 + 100

Combine like terms: -88 + 100 = 12
100 + -20x + x2 = 12

Factor a perfect square on the left side:
(x + -10)(x + -10) = 12

Calculate the square root of the right side: 3.464101615

Break this problem into two subproblems by setting 
(x + -10) equal to 3.464101615 and -3.464101615.

Subproblem 1

x + -10 = 3.464101615 Simplifying x + -10 = 3.464101615 Reorder the terms: -10 + x = 3.464101615 Solving -10 + x = 3.464101615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 3.464101615 + 10 Combine like terms: -10 + 10 = 0 0 + x = 3.464101615 + 10 x = 3.464101615 + 10 Combine like terms: 3.464101615 + 10 = 13.464101615 x = 13.464101615 Simplifying x = 13.464101615

Subproblem 2

x + -10 = -3.464101615 Simplifying x + -10 = -3.464101615 Reorder the terms: -10 + x = -3.464101615 Solving -10 + x = -3.464101615 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -3.464101615 + 10 Combine like terms: -10 + 10 = 0 0 + x = -3.464101615 + 10 x = -3.464101615 + 10 Combine like terms: -3.464101615 + 10 = 6.535898385 x = 6.535898385 Simplifying x = 6.535898385

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.464101615, 6.535898385}

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