3x+(-2-4x)x=5

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Solution for 3x+(-2-4x)x=5 equation:


Simplifying
3x + (-2 + -4x) * x = 5

Reorder the terms for easier multiplication:
3x + x(-2 + -4x) = 5
3x + (-2 * x + -4x * x) = 5
3x + (-2x + -4x2) = 5

Combine like terms: 3x + -2x = 1x
1x + -4x2 = 5

Solving
1x + -4x2 = 5

Solving for variable 'x'.

Reorder the terms:
-5 + 1x + -4x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + 1x + -4x2 = 0

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

Divide each side by '-4'.
1.25 + -0.25x + x2 = 0

Move the constant term to the right:

Add '-1.25' to each side of the equation.
1.25 + -0.25x + -1.25 + x2 = 0 + -1.25

Reorder the terms:
1.25 + -1.25 + -0.25x + x2 = 0 + -1.25

Combine like terms: 1.25 + -1.25 = 0.00
0.00 + -0.25x + x2 = 0 + -1.25
-0.25x + x2 = 0 + -1.25

Combine like terms: 0 + -1.25 = -1.25
-0.25x + x2 = -1.25

The x term is -0.25x.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25x + 0.015625 + x2 = -1.25 + 0.015625

Reorder the terms:
0.015625 + -0.25x + x2 = -1.25 + 0.015625

Combine like terms: -1.25 + 0.015625 = -1.234375
0.015625 + -0.25x + x2 = -1.234375

Factor a perfect square on the left side:
(x + -0.125)(x + -0.125) = -1.234375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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