(4x+8)4x+-16=3

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Solution for (4x+8)4x+-16=3 equation:


Simplifying
(4x + 8) * 4x + -16 = 3

Reorder the terms:
(8 + 4x) * 4x + -16 = 3

Reorder the terms for easier multiplication:
4x(8 + 4x) + -16 = 3
(8 * 4x + 4x * 4x) + -16 = 3
(32x + 16x2) + -16 = 3

Reorder the terms:
-16 + 32x + 16x2 = 3

Solving
-16 + 32x + 16x2 = 3

Solving for variable 'x'.

Reorder the terms:
-16 + -3 + 32x + 16x2 = 3 + -3

Combine like terms: -16 + -3 = -19
-19 + 32x + 16x2 = 3 + -3

Combine like terms: 3 + -3 = 0
-19 + 32x + 16x2 = 0

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

Divide each side by '16'.
-1.1875 + 2x + x2 = 0

Move the constant term to the right:

Add '1.1875' to each side of the equation.
-1.1875 + 2x + 1.1875 + x2 = 0 + 1.1875

Reorder the terms:
-1.1875 + 1.1875 + 2x + x2 = 0 + 1.1875

Combine like terms: -1.1875 + 1.1875 = 0.0000
0.0000 + 2x + x2 = 0 + 1.1875
2x + x2 = 0 + 1.1875

Combine like terms: 0 + 1.1875 = 1.1875
2x + x2 = 1.1875

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 1.1875 + 1

Reorder the terms:
1 + 2x + x2 = 1.1875 + 1

Combine like terms: 1.1875 + 1 = 2.1875
1 + 2x + x2 = 2.1875

Factor a perfect square on the left side:
(x + 1)(x + 1) = 2.1875

Calculate the square root of the right side: 1.479019946

Break this problem into two subproblems by setting 
(x + 1) equal to 1.479019946 and -1.479019946.

Subproblem 1

x + 1 = 1.479019946 Simplifying x + 1 = 1.479019946 Reorder the terms: 1 + x = 1.479019946 Solving 1 + x = 1.479019946 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.479019946 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.479019946 + -1 x = 1.479019946 + -1 Combine like terms: 1.479019946 + -1 = 0.479019946 x = 0.479019946 Simplifying x = 0.479019946

Subproblem 2

x + 1 = -1.479019946 Simplifying x + 1 = -1.479019946 Reorder the terms: 1 + x = -1.479019946 Solving 1 + x = -1.479019946 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.479019946 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.479019946 + -1 x = -1.479019946 + -1 Combine like terms: -1.479019946 + -1 = -2.479019946 x = -2.479019946 Simplifying x = -2.479019946

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.479019946, -2.479019946}

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