(x-4)(x-4)=769

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Solution for (x-4)(x-4)=769 equation:


Simplifying
(x + -4)(x + -4) = 769

Reorder the terms:
(-4 + x)(x + -4) = 769

Reorder the terms:
(-4 + x)(-4 + x) = 769

Multiply (-4 + x) * (-4 + x)
(-4(-4 + x) + x(-4 + x)) = 769
((-4 * -4 + x * -4) + x(-4 + x)) = 769
((16 + -4x) + x(-4 + x)) = 769
(16 + -4x + (-4 * x + x * x)) = 769
(16 + -4x + (-4x + x2)) = 769

Combine like terms: -4x + -4x = -8x
(16 + -8x + x2) = 769

Solving
16 + -8x + x2 = 769

Solving for variable 'x'.

Reorder the terms:
16 + -769 + -8x + x2 = 769 + -769

Combine like terms: 16 + -769 = -753
-753 + -8x + x2 = 769 + -769

Combine like terms: 769 + -769 = 0
-753 + -8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '753' to each side of the equation.
-753 + -8x + 753 + x2 = 0 + 753

Reorder the terms:
-753 + 753 + -8x + x2 = 0 + 753

Combine like terms: -753 + 753 = 0
0 + -8x + x2 = 0 + 753
-8x + x2 = 0 + 753

Combine like terms: 0 + 753 = 753
-8x + x2 = 753

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 753 + 16

Reorder the terms:
16 + -8x + x2 = 753 + 16

Combine like terms: 753 + 16 = 769
16 + -8x + x2 = 769

Factor a perfect square on the left side:
(x + -4)(x + -4) = 769

Calculate the square root of the right side: 27.730849248

Break this problem into two subproblems by setting 
(x + -4) equal to 27.730849248 and -27.730849248.

Subproblem 1

x + -4 = 27.730849248 Simplifying x + -4 = 27.730849248 Reorder the terms: -4 + x = 27.730849248 Solving -4 + x = 27.730849248 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 27.730849248 + 4 Combine like terms: -4 + 4 = 0 0 + x = 27.730849248 + 4 x = 27.730849248 + 4 Combine like terms: 27.730849248 + 4 = 31.730849248 x = 31.730849248 Simplifying x = 31.730849248

Subproblem 2

x + -4 = -27.730849248 Simplifying x + -4 = -27.730849248 Reorder the terms: -4 + x = -27.730849248 Solving -4 + x = -27.730849248 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = -27.730849248 + 4 Combine like terms: -4 + 4 = 0 0 + x = -27.730849248 + 4 x = -27.730849248 + 4 Combine like terms: -27.730849248 + 4 = -23.730849248 x = -23.730849248 Simplifying x = -23.730849248

Solution

The solution to the problem is based on the solutions from the subproblems. x = {31.730849248, -23.730849248}

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