13x^2+12x+15=x+10

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Solution for 13x^2+12x+15=x+10 equation:


Simplifying
13x2 + 12x + 15 = x + 10

Reorder the terms:
15 + 12x + 13x2 = x + 10

Reorder the terms:
15 + 12x + 13x2 = 10 + x

Solving
15 + 12x + 13x2 = 10 + x

Solving for variable 'x'.

Reorder the terms:
15 + -10 + 12x + -1x + 13x2 = 10 + x + -10 + -1x

Combine like terms: 15 + -10 = 5
5 + 12x + -1x + 13x2 = 10 + x + -10 + -1x

Combine like terms: 12x + -1x = 11x
5 + 11x + 13x2 = 10 + x + -10 + -1x

Reorder the terms:
5 + 11x + 13x2 = 10 + -10 + x + -1x

Combine like terms: 10 + -10 = 0
5 + 11x + 13x2 = 0 + x + -1x
5 + 11x + 13x2 = x + -1x

Combine like terms: x + -1x = 0
5 + 11x + 13x2 = 0

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

Divide each side by '13'.
0.3846153846 + 0.8461538462x + x2 = 0

Move the constant term to the right:

Add '-0.3846153846' to each side of the equation.
0.3846153846 + 0.8461538462x + -0.3846153846 + x2 = 0 + -0.3846153846

Reorder the terms:
0.3846153846 + -0.3846153846 + 0.8461538462x + x2 = 0 + -0.3846153846

Combine like terms: 0.3846153846 + -0.3846153846 = 0.0000000000
0.0000000000 + 0.8461538462x + x2 = 0 + -0.3846153846
0.8461538462x + x2 = 0 + -0.3846153846

Combine like terms: 0 + -0.3846153846 = -0.3846153846
0.8461538462x + x2 = -0.3846153846

The x term is 0.8461538462x.  Take half its coefficient (0.4230769231).
Square it (0.1789940829) and add it to both sides.

Add '0.1789940829' to each side of the equation.
0.8461538462x + 0.1789940829 + x2 = -0.3846153846 + 0.1789940829

Reorder the terms:
0.1789940829 + 0.8461538462x + x2 = -0.3846153846 + 0.1789940829

Combine like terms: -0.3846153846 + 0.1789940829 = -0.2056213017
0.1789940829 + 0.8461538462x + x2 = -0.2056213017

Factor a perfect square on the left side:
(x + 0.4230769231)(x + 0.4230769231) = -0.2056213017

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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