(x-5)(x-5)=30

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Solution for (x-5)(x-5)=30 equation:


Simplifying
(x + -5)(x + -5) = 30

Reorder the terms:
(-5 + x)(x + -5) = 30

Reorder the terms:
(-5 + x)(-5 + x) = 30

Multiply (-5 + x) * (-5 + x)
(-5(-5 + x) + x(-5 + x)) = 30
((-5 * -5 + x * -5) + x(-5 + x)) = 30
((25 + -5x) + x(-5 + x)) = 30
(25 + -5x + (-5 * x + x * x)) = 30
(25 + -5x + (-5x + x2)) = 30

Combine like terms: -5x + -5x = -10x
(25 + -10x + x2) = 30

Solving
25 + -10x + x2 = 30

Solving for variable 'x'.

Reorder the terms:
25 + -30 + -10x + x2 = 30 + -30

Combine like terms: 25 + -30 = -5
-5 + -10x + x2 = 30 + -30

Combine like terms: 30 + -30 = 0
-5 + -10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -10x + 5 + x2 = 0 + 5

Reorder the terms:
-5 + 5 + -10x + x2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -10x + x2 = 0 + 5
-10x + x2 = 0 + 5

Combine like terms: 0 + 5 = 5
-10x + x2 = 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 = 5 + 25

Reorder the terms:
25 + -10x + x2 = 5 + 25

Combine like terms: 5 + 25 = 30
25 + -10x + x2 = 30

Factor a perfect square on the left side:
(x + -5)(x + -5) = 30

Calculate the square root of the right side: 5.477225575

Break this problem into two subproblems by setting 
(x + -5) equal to 5.477225575 and -5.477225575.

Subproblem 1

x + -5 = 5.477225575 Simplifying x + -5 = 5.477225575 Reorder the terms: -5 + x = 5.477225575 Solving -5 + x = 5.477225575 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 = 5.477225575 + 5 Combine like terms: -5 + 5 = 0 0 + x = 5.477225575 + 5 x = 5.477225575 + 5 Combine like terms: 5.477225575 + 5 = 10.477225575 x = 10.477225575 Simplifying x = 10.477225575

Subproblem 2

x + -5 = -5.477225575 Simplifying x + -5 = -5.477225575 Reorder the terms: -5 + x = -5.477225575 Solving -5 + x = -5.477225575 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 = -5.477225575 + 5 Combine like terms: -5 + 5 = 0 0 + x = -5.477225575 + 5 x = -5.477225575 + 5 Combine like terms: -5.477225575 + 5 = -0.477225575 x = -0.477225575 Simplifying x = -0.477225575

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.477225575, -0.477225575}

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