8x(2x+3)=x+1

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Solution for 8x(2x+3)=x+1 equation:


Simplifying
8x(2x + 3) = x + 1

Reorder the terms:
8x(3 + 2x) = x + 1
(3 * 8x + 2x * 8x) = x + 1
(24x + 16x2) = x + 1

Reorder the terms:
24x + 16x2 = 1 + x

Solving
24x + 16x2 = 1 + x

Solving for variable 'x'.

Reorder the terms:
-1 + 24x + -1x + 16x2 = 1 + x + -1 + -1x

Combine like terms: 24x + -1x = 23x
-1 + 23x + 16x2 = 1 + x + -1 + -1x

Reorder the terms:
-1 + 23x + 16x2 = 1 + -1 + x + -1x

Combine like terms: 1 + -1 = 0
-1 + 23x + 16x2 = 0 + x + -1x
-1 + 23x + 16x2 = x + -1x

Combine like terms: x + -1x = 0
-1 + 23x + 16x2 = 0

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

Divide each side by '16'.
-0.0625 + 1.4375x + x2 = 0

Move the constant term to the right:

Add '0.0625' to each side of the equation.
-0.0625 + 1.4375x + 0.0625 + x2 = 0 + 0.0625

Reorder the terms:
-0.0625 + 0.0625 + 1.4375x + x2 = 0 + 0.0625

Combine like terms: -0.0625 + 0.0625 = 0.0000
0.0000 + 1.4375x + x2 = 0 + 0.0625
1.4375x + x2 = 0 + 0.0625

Combine like terms: 0 + 0.0625 = 0.0625
1.4375x + x2 = 0.0625

The x term is 1.4375x.  Take half its coefficient (0.71875).
Square it (0.5166015625) and add it to both sides.

Add '0.5166015625' to each side of the equation.
1.4375x + 0.5166015625 + x2 = 0.0625 + 0.5166015625

Reorder the terms:
0.5166015625 + 1.4375x + x2 = 0.0625 + 0.5166015625

Combine like terms: 0.0625 + 0.5166015625 = 0.5791015625
0.5166015625 + 1.4375x + x2 = 0.5791015625

Factor a perfect square on the left side:
(x + 0.71875)(x + 0.71875) = 0.5791015625

Calculate the square root of the right side: 0.760987229

Break this problem into two subproblems by setting 
(x + 0.71875) equal to 0.760987229 and -0.760987229.

Subproblem 1

x + 0.71875 = 0.760987229 Simplifying x + 0.71875 = 0.760987229 Reorder the terms: 0.71875 + x = 0.760987229 Solving 0.71875 + x = 0.760987229 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.71875' to each side of the equation. 0.71875 + -0.71875 + x = 0.760987229 + -0.71875 Combine like terms: 0.71875 + -0.71875 = 0.00000 0.00000 + x = 0.760987229 + -0.71875 x = 0.760987229 + -0.71875 Combine like terms: 0.760987229 + -0.71875 = 0.042237229 x = 0.042237229 Simplifying x = 0.042237229

Subproblem 2

x + 0.71875 = -0.760987229 Simplifying x + 0.71875 = -0.760987229 Reorder the terms: 0.71875 + x = -0.760987229 Solving 0.71875 + x = -0.760987229 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.71875' to each side of the equation. 0.71875 + -0.71875 + x = -0.760987229 + -0.71875 Combine like terms: 0.71875 + -0.71875 = 0.00000 0.00000 + x = -0.760987229 + -0.71875 x = -0.760987229 + -0.71875 Combine like terms: -0.760987229 + -0.71875 = -1.479737229 x = -1.479737229 Simplifying x = -1.479737229

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.042237229, -1.479737229}

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