(3x^2-x+7)+(6x^2-3)=

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Solution for (3x^2-x+7)+(6x^2-3)= equation:


Simplifying
(3x2 + -1x + 7) + (6x2 + -3) = 0

Reorder the terms:
(7 + -1x + 3x2) + (6x2 + -3) = 0

Remove parenthesis around (7 + -1x + 3x2)
7 + -1x + 3x2 + (6x2 + -3) = 0

Reorder the terms:
7 + -1x + 3x2 + (-3 + 6x2) = 0

Remove parenthesis around (-3 + 6x2)
7 + -1x + 3x2 + -3 + 6x2 = 0

Reorder the terms:
7 + -3 + -1x + 3x2 + 6x2 = 0

Combine like terms: 7 + -3 = 4
4 + -1x + 3x2 + 6x2 = 0

Combine like terms: 3x2 + 6x2 = 9x2
4 + -1x + 9x2 = 0

Solving
4 + -1x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
0.4444444444 + -0.1111111111x + x2 = 0

Move the constant term to the right:

Add '-0.4444444444' to each side of the equation.
0.4444444444 + -0.1111111111x + -0.4444444444 + x2 = 0 + -0.4444444444

Reorder the terms:
0.4444444444 + -0.4444444444 + -0.1111111111x + x2 = 0 + -0.4444444444

Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000
0.0000000000 + -0.1111111111x + x2 = 0 + -0.4444444444
-0.1111111111x + x2 = 0 + -0.4444444444

Combine like terms: 0 + -0.4444444444 = -0.4444444444
-0.1111111111x + x2 = -0.4444444444

The x term is -0.1111111111x.  Take half its coefficient (-0.05555555555).
Square it (0.003086419752) and add it to both sides.

Add '0.003086419752' to each side of the equation.
-0.1111111111x + 0.003086419752 + x2 = -0.4444444444 + 0.003086419752

Reorder the terms:
0.003086419752 + -0.1111111111x + x2 = -0.4444444444 + 0.003086419752

Combine like terms: -0.4444444444 + 0.003086419752 = -0.441358024648
0.003086419752 + -0.1111111111x + x2 = -0.441358024648

Factor a perfect square on the left side:
(x + -0.05555555555)(x + -0.05555555555) = -0.441358024648

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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