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

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


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

Reorder the terms:
3(2 + x) + -2x(x + 1) = 8
(2 * 3 + x * 3) + -2x(x + 1) = 8
(6 + 3x) + -2x(x + 1) = 8

Reorder the terms:
6 + 3x + -2x(1 + x) = 8
6 + 3x + (1 * -2x + x * -2x) = 8
6 + 3x + (-2x + -2x2) = 8

Combine like terms: 3x + -2x = 1x
6 + 1x + -2x2 = 8

Solving
6 + 1x + -2x2 = 8

Solving for variable 'x'.

Reorder the terms:
6 + -8 + 1x + -2x2 = 8 + -8

Combine like terms: 6 + -8 = -2
-2 + 1x + -2x2 = 8 + -8

Combine like terms: 8 + -8 = 0
-2 + 1x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
1 + -0.5x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -0.5x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + -0.5x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -0.5x + x2 = 0 + -1
-0.5x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
-0.5x + x2 = -1

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 = -1 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = -1 + 0.0625

Combine like terms: -1 + 0.0625 = -0.9375
0.0625 + -0.5x + x2 = -0.9375

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = -0.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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