5x(x+1)-2x(x+2)=-1-x

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Solution for 5x(x+1)-2x(x+2)=-1-x equation:


Simplifying
5x(x + 1) + -2x(x + 2) = -1 + -1x

Reorder the terms:
5x(1 + x) + -2x(x + 2) = -1 + -1x
(1 * 5x + x * 5x) + -2x(x + 2) = -1 + -1x
(5x + 5x2) + -2x(x + 2) = -1 + -1x

Reorder the terms:
5x + 5x2 + -2x(2 + x) = -1 + -1x
5x + 5x2 + (2 * -2x + x * -2x) = -1 + -1x
5x + 5x2 + (-4x + -2x2) = -1 + -1x

Reorder the terms:
5x + -4x + 5x2 + -2x2 = -1 + -1x

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

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

Solving
1x + 3x2 = -1 + -1x

Solving for variable 'x'.

Reorder the terms:
1 + 1x + x + 3x2 = -1 + -1x + 1 + x

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

Reorder the terms:
1 + 2x + 3x2 = -1 + 1 + -1x + x

Combine like terms: -1 + 1 = 0
1 + 2x + 3x2 = 0 + -1x + x
1 + 2x + 3x2 = -1x + x

Combine like terms: -1x + x = 0
1 + 2x + 3x2 = 0

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

Divide each side by '3'.
0.3333333333 + 0.6666666667x + x2 = 0

Move the constant term to the right:

Add '-0.3333333333' to each side of the equation.
0.3333333333 + 0.6666666667x + -0.3333333333 + x2 = 0 + -0.3333333333

Reorder the terms:
0.3333333333 + -0.3333333333 + 0.6666666667x + x2 = 0 + -0.3333333333

Combine like terms: 0.3333333333 + -0.3333333333 = 0.0000000000
0.0000000000 + 0.6666666667x + x2 = 0 + -0.3333333333
0.6666666667x + x2 = 0 + -0.3333333333

Combine like terms: 0 + -0.3333333333 = -0.3333333333
0.6666666667x + x2 = -0.3333333333

The x term is 0.6666666667x.  Take half its coefficient (0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
0.6666666667x + 0.1111111112 + x2 = -0.3333333333 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667x + x2 = -0.3333333333 + 0.1111111112

Combine like terms: -0.3333333333 + 0.1111111112 = -0.2222222221
0.1111111112 + 0.6666666667x + x2 = -0.2222222221

Factor a perfect square on the left side:
(x + 0.3333333334)(x + 0.3333333334) = -0.2222222221

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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