(x+4)(x+4)-3=0

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Solution for (x+4)(x+4)-3=0 equation:


Simplifying
(x + 4)(x + 4) + -3 = 0

Reorder the terms:
(4 + x)(x + 4) + -3 = 0

Reorder the terms:
(4 + x)(4 + x) + -3 = 0

Multiply (4 + x) * (4 + x)
(4(4 + x) + x(4 + x)) + -3 = 0
((4 * 4 + x * 4) + x(4 + x)) + -3 = 0
((16 + 4x) + x(4 + x)) + -3 = 0
(16 + 4x + (4 * x + x * x)) + -3 = 0
(16 + 4x + (4x + x2)) + -3 = 0

Combine like terms: 4x + 4x = 8x
(16 + 8x + x2) + -3 = 0

Reorder the terms:
16 + -3 + 8x + x2 = 0

Combine like terms: 16 + -3 = 13
13 + 8x + x2 = 0

Solving
13 + 8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-13' to each side of the equation.
13 + 8x + -13 + x2 = 0 + -13

Reorder the terms:
13 + -13 + 8x + x2 = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 8x + x2 = 0 + -13
8x + x2 = 0 + -13

Combine like terms: 0 + -13 = -13
8x + x2 = -13

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 = -13 + 16

Reorder the terms:
16 + 8x + x2 = -13 + 16

Combine like terms: -13 + 16 = 3
16 + 8x + x2 = 3

Factor a perfect square on the left side:
(x + 4)(x + 4) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x + 4) equal to 1.732050808 and -1.732050808.

Subproblem 1

x + 4 = 1.732050808 Simplifying x + 4 = 1.732050808 Reorder the terms: 4 + x = 1.732050808 Solving 4 + x = 1.732050808 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 = 1.732050808 + -4 Combine like terms: 4 + -4 = 0 0 + x = 1.732050808 + -4 x = 1.732050808 + -4 Combine like terms: 1.732050808 + -4 = -2.267949192 x = -2.267949192 Simplifying x = -2.267949192

Subproblem 2

x + 4 = -1.732050808 Simplifying x + 4 = -1.732050808 Reorder the terms: 4 + x = -1.732050808 Solving 4 + x = -1.732050808 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 = -1.732050808 + -4 Combine like terms: 4 + -4 = 0 0 + x = -1.732050808 + -4 x = -1.732050808 + -4 Combine like terms: -1.732050808 + -4 = -5.732050808 x = -5.732050808 Simplifying x = -5.732050808

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.267949192, -5.732050808}

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