5(x+7)(x+7)=25

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Solution for 5(x+7)(x+7)=25 equation: 


Simplifying
5(x + 7)(x + 7) = 25

Reorder the terms:
5(7 + x)(x + 7) = 25

Reorder the terms:
5(7 + x)(7 + x) = 25

Multiply (7 + x) * (7 + x)
5(7(7 + x) + x(7 + x)) = 25
5((7 * 7 + x * 7) + x(7 + x)) = 25
5((49 + 7x) + x(7 + x)) = 25
5(49 + 7x + (7 * x + x * x)) = 25
5(49 + 7x + (7x + x2)) = 25

Combine like terms: 7x + 7x = 14x
5(49 + 14x + x2) = 25
(49 * 5 + 14x * 5 + x2 * 5) = 25
(245 + 70x + 5x2) = 25

Solving
245 + 70x + 5x2 = 25

Solving for variable 'x'.

Reorder the terms:
245 + -25 + 70x + 5x2 = 25 + -25

Combine like terms: 245 + -25 = 220
220 + 70x + 5x2 = 25 + -25

Combine like terms: 25 + -25 = 0
220 + 70x + 5x2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(44 + 14x + x2) = 0

Ignore the factor 5.

Subproblem 1
Set the factor '(44 + 14x + x2)' equal to zero and attempt to solve:

Simplifying
44 + 14x + x2 = 0

Solving
44 + 14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-44' to each side of the equation.
44 + 14x + -44 + x2 = 0 + -44

Reorder the terms:
44 + -44 + 14x + x2 = 0 + -44

Combine like terms: 44 + -44 = 0
0 + 14x + x2 = 0 + -44
14x + x2 = 0 + -44

Combine like terms: 0 + -44 = -44
14x + x2 = -44

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 = -44 + 49

Reorder the terms:
49 + 14x + x2 = -44 + 49

Combine like terms: -44 + 49 = 5
49 + 14x + x2 = 5

Factor a perfect square on the left side:
(x + 7)(x + 7) = 5

Calculate the square root of the right side: 2.236067978

Break this problem into two subproblems by setting 
(x + 7) equal to 2.236067978 and -2.236067978.


Subproblem 1
x + 7 = 2.236067978

Simplifying
x + 7 = 2.236067978

Reorder the terms:
7 + x = 2.236067978

Solving
7 + x = 2.236067978

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 = 2.236067978 + -7

Combine like terms: 7 + -7 = 0
0 + x = 2.236067978 + -7
x = 2.236067978 + -7

Combine like terms: 2.236067978 + -7 = -4.763932022
x = -4.763932022

Simplifying
x = -4.763932022


Subproblem 2
x + 7 = -2.236067978

Simplifying
x + 7 = -2.236067978

Reorder the terms:
7 + x = -2.236067978

Solving
7 + x = -2.236067978

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 = -2.236067978 + -7

Combine like terms: 7 + -7 = 0
0 + x = -2.236067978 + -7
x = -2.236067978 + -7

Combine like terms: -2.236067978 + -7 = -9.236067978
x = -9.236067978

Simplifying
x = -9.236067978


Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {-4.763932022, -9.236067978}
Solution
x = {-4.763932022, -9.236067978}

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