7x-4x(3x+2)=7

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Solution for 7x-4x(3x+2)=7 equation: 


Simplifying
7x + -4x(3x + 2) = 7

Reorder the terms:
7x + -4x(2 + 3x) = 7
7x + (2 * -4x + 3x * -4x) = 7
7x + (-8x + -12x2) = 7

Combine like terms: 7x + -8x = -1x
-1x + -12x2 = 7

Solving
-1x + -12x2 = 7

Solving for variable 'x'.

Reorder the terms:
-7 + -1x + -12x2 = 7 + -7

Combine like terms: 7 + -7 = 0
-7 + -1x + -12x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(7 + x + 12x2) = 0

Ignore the factor -1.

Subproblem 1
Set the factor '(7 + x + 12x2)' equal to zero and attempt to solve:

Simplifying
7 + x + 12x2 = 0

Solving
7 + x + 12x2 = 0

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

Divide each side by '12'.
0.5833333333 + 0.08333333333x + x2 = 0

Move the constant term to the right:

Add '-0.5833333333' to each side of the equation.
0.5833333333 + 0.08333333333x + -0.5833333333 + x2 = 0 + -0.5833333333

Reorder the terms:
0.5833333333 + -0.5833333333 + 0.08333333333x + x2 = 0 + -0.5833333333

Combine like terms: 0.5833333333 + -0.5833333333 = 0.0000000000
0.0000000000 + 0.08333333333x + x2 = 0 + -0.5833333333
0.08333333333x + x2 = 0 + -0.5833333333

Combine like terms: 0 + -0.5833333333 = -0.5833333333
0.08333333333x + x2 = -0.5833333333

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

Add '0.25' to each side of the equation.
0.08333333333x + 0.25 + x2 = -0.5833333333 + 0.25

Reorder the terms:
0.25 + 0.08333333333x + x2 = -0.5833333333 + 0.25

Combine like terms: -0.5833333333 + 0.25 = -0.3333333333
0.25 + 0.08333333333x + x2 = -0.3333333333

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -0.3333333333

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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