(x-7)(x-7)=60

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Solution for (x-7)(x-7)=60 equation:


Simplifying
(x + -7)(x + -7) = 60

Reorder the terms:
(-7 + x)(x + -7) = 60

Reorder the terms:
(-7 + x)(-7 + x) = 60

Multiply (-7 + x) * (-7 + x)
(-7(-7 + x) + x(-7 + x)) = 60
((-7 * -7 + x * -7) + x(-7 + x)) = 60
((49 + -7x) + x(-7 + x)) = 60
(49 + -7x + (-7 * x + x * x)) = 60
(49 + -7x + (-7x + x2)) = 60

Combine like terms: -7x + -7x = -14x
(49 + -14x + x2) = 60

Solving
49 + -14x + x2 = 60

Solving for variable 'x'.

Reorder the terms:
49 + -60 + -14x + x2 = 60 + -60

Combine like terms: 49 + -60 = -11
-11 + -14x + x2 = 60 + -60

Combine like terms: 60 + -60 = 0
-11 + -14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '11' to each side of the equation.
-11 + -14x + 11 + x2 = 0 + 11

Reorder the terms:
-11 + 11 + -14x + x2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + -14x + x2 = 0 + 11
-14x + x2 = 0 + 11

Combine like terms: 0 + 11 = 11
-14x + x2 = 11

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = 11 + 49

Reorder the terms:
49 + -14x + x2 = 11 + 49

Combine like terms: 11 + 49 = 60
49 + -14x + x2 = 60

Factor a perfect square on the left side:
(x + -7)(x + -7) = 60

Calculate the square root of the right side: 7.745966692

Break this problem into two subproblems by setting 
(x + -7) equal to 7.745966692 and -7.745966692.

Subproblem 1

x + -7 = 7.745966692 Simplifying x + -7 = 7.745966692 Reorder the terms: -7 + x = 7.745966692 Solving -7 + x = 7.745966692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 7.745966692 + 7 Combine like terms: -7 + 7 = 0 0 + x = 7.745966692 + 7 x = 7.745966692 + 7 Combine like terms: 7.745966692 + 7 = 14.745966692 x = 14.745966692 Simplifying x = 14.745966692

Subproblem 2

x + -7 = -7.745966692 Simplifying x + -7 = -7.745966692 Reorder the terms: -7 + x = -7.745966692 Solving -7 + x = -7.745966692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -7.745966692 + 7 Combine like terms: -7 + 7 = 0 0 + x = -7.745966692 + 7 x = -7.745966692 + 7 Combine like terms: -7.745966692 + 7 = -0.745966692 x = -0.745966692 Simplifying x = -0.745966692

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.745966692, -0.745966692}

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