8x(6x+3)=-12

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Solution for 8x(6x+3)=-12 equation: 


Simplifying
8x(6x + 3) = -12

Reorder the terms:
8x(3 + 6x) = -12
(3 * 8x + 6x * 8x) = -12
(24x + 48x2) = -12

Solving
24x + 48x2 = -12

Solving for variable 'x'.

Reorder the terms:
12 + 24x + 48x2 = -12 + 12

Combine like terms: -12 + 12 = 0
12 + 24x + 48x2 = 0

Factor out the Greatest Common Factor (GCF), '12'.
12(1 + 2x + 4x2) = 0

Ignore the factor 12.

Subproblem 1
Set the factor '(1 + 2x + 4x2)' equal to zero and attempt to solve:

Simplifying
1 + 2x + 4x2 = 0

Solving
1 + 2x + 4x2 = 0

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

Divide each side by '4'.
0.25 + 0.5x + x2 = 0

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + 0.5x + -0.25 + x2 = 0 + -0.25

Reorder the terms:
0.25 + -0.25 + 0.5x + x2 = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + 0.5x + x2 = 0 + -0.25
0.5x + x2 = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
0.5x + x2 = -0.25

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = -0.25 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = -0.25 + 0.0625

Combine like terms: -0.25 + 0.0625 = -0.1875
0.0625 + 0.5x + x2 = -0.1875

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = -0.1875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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