4(x+7)(x+7)=11

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Solution for 4(x+7)(x+7)=11 equation:


Simplifying
4(x + 7)(x + 7) = 11

Reorder the terms:
4(7 + x)(x + 7) = 11

Reorder the terms:
4(7 + x)(7 + x) = 11

Multiply (7 + x) * (7 + x)
4(7(7 + x) + x(7 + x)) = 11
4((7 * 7 + x * 7) + x(7 + x)) = 11
4((49 + 7x) + x(7 + x)) = 11
4(49 + 7x + (7 * x + x * x)) = 11
4(49 + 7x + (7x + x2)) = 11

Combine like terms: 7x + 7x = 14x
4(49 + 14x + x2) = 11
(49 * 4 + 14x * 4 + x2 * 4) = 11
(196 + 56x + 4x2) = 11

Solving
196 + 56x + 4x2 = 11

Solving for variable 'x'.

Reorder the terms:
196 + -11 + 56x + 4x2 = 11 + -11

Combine like terms: 196 + -11 = 185
185 + 56x + 4x2 = 11 + -11

Combine like terms: 11 + -11 = 0
185 + 56x + 4x2 = 0

Begin completing the square.  Divide all terms by
4 the coefficient of the squared term: 

Divide each side by '4'.
46.25 + 14x + x2 = 0

Move the constant term to the right:

Add '-46.25' to each side of the equation.
46.25 + 14x + -46.25 + x2 = 0 + -46.25

Reorder the terms:
46.25 + -46.25 + 14x + x2 = 0 + -46.25

Combine like terms: 46.25 + -46.25 = 0.00
0.00 + 14x + x2 = 0 + -46.25
14x + x2 = 0 + -46.25

Combine like terms: 0 + -46.25 = -46.25
14x + x2 = -46.25

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 = -46.25 + 49

Reorder the terms:
49 + 14x + x2 = -46.25 + 49

Combine like terms: -46.25 + 49 = 2.75
49 + 14x + x2 = 2.75

Factor a perfect square on the left side:
(x + 7)(x + 7) = 2.75

Calculate the square root of the right side: 1.658312395

Break this problem into two subproblems by setting 
(x + 7) equal to 1.658312395 and -1.658312395.

Subproblem 1

x + 7 = 1.658312395 Simplifying x + 7 = 1.658312395 Reorder the terms: 7 + x = 1.658312395 Solving 7 + x = 1.658312395 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 = 1.658312395 + -7 Combine like terms: 7 + -7 = 0 0 + x = 1.658312395 + -7 x = 1.658312395 + -7 Combine like terms: 1.658312395 + -7 = -5.341687605 x = -5.341687605 Simplifying x = -5.341687605

Subproblem 2

x + 7 = -1.658312395 Simplifying x + 7 = -1.658312395 Reorder the terms: 7 + x = -1.658312395 Solving 7 + x = -1.658312395 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 = -1.658312395 + -7 Combine like terms: 7 + -7 = 0 0 + x = -1.658312395 + -7 x = -1.658312395 + -7 Combine like terms: -1.658312395 + -7 = -8.658312395 x = -8.658312395 Simplifying x = -8.658312395

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-5.341687605, -8.658312395}

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