(1x^2+5x+7)+(1x^2+5x+6)=

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Solution for (1x^2+5x+7)+(1x^2+5x+6)= equation:


Simplifying
(1x2 + 5x + 7) + (1x2 + 5x + 6) = 0

Reorder the terms:
(7 + 5x + 1x2) + (1x2 + 5x + 6) = 0

Remove parenthesis around (7 + 5x + 1x2)
7 + 5x + 1x2 + (1x2 + 5x + 6) = 0

Reorder the terms:
7 + 5x + 1x2 + (6 + 5x + 1x2) = 0

Remove parenthesis around (6 + 5x + 1x2)
7 + 5x + 1x2 + 6 + 5x + 1x2 = 0

Reorder the terms:
7 + 6 + 5x + 5x + 1x2 + 1x2 = 0

Combine like terms: 7 + 6 = 13
13 + 5x + 5x + 1x2 + 1x2 = 0

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

Combine like terms: 1x2 + 1x2 = 2x2
13 + 10x + 2x2 = 0

Solving
13 + 10x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
6.5 + 5x + x2 = 0

Move the constant term to the right:

Add '-6.5' to each side of the equation.
6.5 + 5x + -6.5 + x2 = 0 + -6.5

Reorder the terms:
6.5 + -6.5 + 5x + x2 = 0 + -6.5

Combine like terms: 6.5 + -6.5 = 0.0
0.0 + 5x + x2 = 0 + -6.5
5x + x2 = 0 + -6.5

Combine like terms: 0 + -6.5 = -6.5
5x + x2 = -6.5

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = -6.5 + 6.25

Reorder the terms:
6.25 + 5x + x2 = -6.5 + 6.25

Combine like terms: -6.5 + 6.25 = -0.25
6.25 + 5x + x2 = -0.25

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = -0.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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