(x-5)(x-5)=9x

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Solution for (x-5)(x-5)=9x equation:


Simplifying
(x + -5)(x + -5) = 9x

Reorder the terms:
(-5 + x)(x + -5) = 9x

Reorder the terms:
(-5 + x)(-5 + x) = 9x

Multiply (-5 + x) * (-5 + x)
(-5(-5 + x) + x(-5 + x)) = 9x
((-5 * -5 + x * -5) + x(-5 + x)) = 9x
((25 + -5x) + x(-5 + x)) = 9x
(25 + -5x + (-5 * x + x * x)) = 9x
(25 + -5x + (-5x + x2)) = 9x

Combine like terms: -5x + -5x = -10x
(25 + -10x + x2) = 9x

Solving
25 + -10x + x2 = 9x

Solving for variable 'x'.

Reorder the terms:
25 + -10x + -9x + x2 = 9x + -9x

Combine like terms: -10x + -9x = -19x
25 + -19x + x2 = 9x + -9x

Combine like terms: 9x + -9x = 0
25 + -19x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-25' to each side of the equation.
25 + -19x + -25 + x2 = 0 + -25

Reorder the terms:
25 + -25 + -19x + x2 = 0 + -25

Combine like terms: 25 + -25 = 0
0 + -19x + x2 = 0 + -25
-19x + x2 = 0 + -25

Combine like terms: 0 + -25 = -25
-19x + x2 = -25

The x term is -19x.  Take half its coefficient (-9.5).
Square it (90.25) and add it to both sides.

Add '90.25' to each side of the equation.
-19x + 90.25 + x2 = -25 + 90.25

Reorder the terms:
90.25 + -19x + x2 = -25 + 90.25

Combine like terms: -25 + 90.25 = 65.25
90.25 + -19x + x2 = 65.25

Factor a perfect square on the left side:
(x + -9.5)(x + -9.5) = 65.25

Calculate the square root of the right side: 8.077747211

Break this problem into two subproblems by setting 
(x + -9.5) equal to 8.077747211 and -8.077747211.

Subproblem 1

x + -9.5 = 8.077747211 Simplifying x + -9.5 = 8.077747211 Reorder the terms: -9.5 + x = 8.077747211 Solving -9.5 + x = 8.077747211 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + x = 8.077747211 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = 8.077747211 + 9.5 x = 8.077747211 + 9.5 Combine like terms: 8.077747211 + 9.5 = 17.577747211 x = 17.577747211 Simplifying x = 17.577747211

Subproblem 2

x + -9.5 = -8.077747211 Simplifying x + -9.5 = -8.077747211 Reorder the terms: -9.5 + x = -8.077747211 Solving -9.5 + x = -8.077747211 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + x = -8.077747211 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = -8.077747211 + 9.5 x = -8.077747211 + 9.5 Combine like terms: -8.077747211 + 9.5 = 1.422252789 x = 1.422252789 Simplifying x = 1.422252789

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.577747211, 1.422252789}

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