(3x^2+4x+3)+(8x^2+7x)=

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Solution for (3x^2+4x+3)+(8x^2+7x)= equation:


Simplifying
(3x2 + 4x + 3) + (8x2 + 7x) = 0

Reorder the terms:
(3 + 4x + 3x2) + (8x2 + 7x) = 0

Remove parenthesis around (3 + 4x + 3x2)
3 + 4x + 3x2 + (8x2 + 7x) = 0

Reorder the terms:
3 + 4x + 3x2 + (7x + 8x2) = 0

Remove parenthesis around (7x + 8x2)
3 + 4x + 3x2 + 7x + 8x2 = 0

Reorder the terms:
3 + 4x + 7x + 3x2 + 8x2 = 0

Combine like terms: 4x + 7x = 11x
3 + 11x + 3x2 + 8x2 = 0

Combine like terms: 3x2 + 8x2 = 11x2
3 + 11x + 11x2 = 0

Solving
3 + 11x + 11x2 = 0

Solving for variable 'x'.

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

Divide each side by '11'.
0.2727272727 + x + x2 = 0

Move the constant term to the right:

Add '-0.2727272727' to each side of the equation.
0.2727272727 + x + -0.2727272727 + x2 = 0 + -0.2727272727

Reorder the terms:
0.2727272727 + -0.2727272727 + x + x2 = 0 + -0.2727272727

Combine like terms: 0.2727272727 + -0.2727272727 = 0.0000000000
0.0000000000 + x + x2 = 0 + -0.2727272727
x + x2 = 0 + -0.2727272727

Combine like terms: 0 + -0.2727272727 = -0.2727272727
x + x2 = -0.2727272727

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = -0.2727272727 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = -0.2727272727 + 0.25

Combine like terms: -0.2727272727 + 0.25 = -0.0227272727
1.25 + x2 = -0.0227272727

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -0.0227272727

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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