(3x^2+x+5)+(2x^2+x-2)=0

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Solution for (3x^2+x+5)+(2x^2+x-2)=0 equation:


Simplifying
(3x2 + x + 5) + (2x2 + x + -2) = 0

Reorder the terms:
(5 + x + 3x2) + (2x2 + x + -2) = 0

Remove parenthesis around (5 + x + 3x2)
5 + x + 3x2 + (2x2 + x + -2) = 0

Reorder the terms:
5 + x + 3x2 + (-2 + x + 2x2) = 0

Remove parenthesis around (-2 + x + 2x2)
5 + x + 3x2 + -2 + x + 2x2 = 0

Reorder the terms:
5 + -2 + x + x + 3x2 + 2x2 = 0

Combine like terms: 5 + -2 = 3
3 + x + x + 3x2 + 2x2 = 0

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

Combine like terms: 3x2 + 2x2 = 5x2
3 + 2x + 5x2 = 0

Solving
3 + 2x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
0.6 + 0.4x + x2 = 0

Move the constant term to the right:

Add '-0.6' to each side of the equation.
0.6 + 0.4x + -0.6 + x2 = 0 + -0.6

Reorder the terms:
0.6 + -0.6 + 0.4x + x2 = 0 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + 0.4x + x2 = 0 + -0.6
0.4x + x2 = 0 + -0.6

Combine like terms: 0 + -0.6 = -0.6
0.4x + x2 = -0.6

The x term is 0.4x.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4x + 0.04 + x2 = -0.6 + 0.04

Reorder the terms:
0.04 + 0.4x + x2 = -0.6 + 0.04

Combine like terms: -0.6 + 0.04 = -0.56
0.04 + 0.4x + x2 = -0.56

Factor a perfect square on the left side:
(x + 0.2)(x + 0.2) = -0.56

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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