3x(x+1)=2(x-5)

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Solution for 3x(x+1)=2(x-5) equation:


Simplifying
3x(x + 1) = 2(x + -5)

Reorder the terms:
3x(1 + x) = 2(x + -5)
(1 * 3x + x * 3x) = 2(x + -5)
(3x + 3x2) = 2(x + -5)

Reorder the terms:
3x + 3x2 = 2(-5 + x)
3x + 3x2 = (-5 * 2 + x * 2)
3x + 3x2 = (-10 + 2x)

Solving
3x + 3x2 = -10 + 2x

Solving for variable 'x'.

Reorder the terms:
10 + 3x + -2x + 3x2 = -10 + 2x + 10 + -2x

Combine like terms: 3x + -2x = 1x
10 + 1x + 3x2 = -10 + 2x + 10 + -2x

Reorder the terms:
10 + 1x + 3x2 = -10 + 10 + 2x + -2x

Combine like terms: -10 + 10 = 0
10 + 1x + 3x2 = 0 + 2x + -2x
10 + 1x + 3x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
10 + 1x + 3x2 = 0

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

Divide each side by '3'.
3.333333333 + 0.3333333333x + x2 = 0

Move the constant term to the right:

Add '-3.333333333' to each side of the equation.
3.333333333 + 0.3333333333x + -3.333333333 + x2 = 0 + -3.333333333

Reorder the terms:
3.333333333 + -3.333333333 + 0.3333333333x + x2 = 0 + -3.333333333

Combine like terms: 3.333333333 + -3.333333333 = 0.000000000
0.000000000 + 0.3333333333x + x2 = 0 + -3.333333333
0.3333333333x + x2 = 0 + -3.333333333

Combine like terms: 0 + -3.333333333 = -3.333333333
0.3333333333x + x2 = -3.333333333

The x term is 0.3333333333x.  Take half its coefficient (0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
0.3333333333x + 0.02777777779 + x2 = -3.333333333 + 0.02777777779

Reorder the terms:
0.02777777779 + 0.3333333333x + x2 = -3.333333333 + 0.02777777779

Combine like terms: -3.333333333 + 0.02777777779 = -3.30555555521
0.02777777779 + 0.3333333333x + x2 = -3.30555555521

Factor a perfect square on the left side:
(x + 0.1666666667)(x + 0.1666666667) = -3.30555555521

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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