(3x^2-10x+3)-(x^2-3x+2)+(7x^2+5)=

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Solution for (3x^2-10x+3)-(x^2-3x+2)+(7x^2+5)= equation:


Simplifying
(3x2 + -10x + 3) + -1(x2 + -3x + 2) + (7x2 + 5) = 0

Reorder the terms:
(3 + -10x + 3x2) + -1(x2 + -3x + 2) + (7x2 + 5) = 0

Remove parenthesis around (3 + -10x + 3x2)
3 + -10x + 3x2 + -1(x2 + -3x + 2) + (7x2 + 5) = 0

Reorder the terms:
3 + -10x + 3x2 + -1(2 + -3x + x2) + (7x2 + 5) = 0
3 + -10x + 3x2 + (2 * -1 + -3x * -1 + x2 * -1) + (7x2 + 5) = 0
3 + -10x + 3x2 + (-2 + 3x + -1x2) + (7x2 + 5) = 0

Reorder the terms:
3 + -10x + 3x2 + -2 + 3x + -1x2 + (5 + 7x2) = 0

Remove parenthesis around (5 + 7x2)
3 + -10x + 3x2 + -2 + 3x + -1x2 + 5 + 7x2 = 0

Reorder the terms:
3 + -2 + 5 + -10x + 3x + 3x2 + -1x2 + 7x2 = 0

Combine like terms: 3 + -2 = 1
1 + 5 + -10x + 3x + 3x2 + -1x2 + 7x2 = 0

Combine like terms: 1 + 5 = 6
6 + -10x + 3x + 3x2 + -1x2 + 7x2 = 0

Combine like terms: -10x + 3x = -7x
6 + -7x + 3x2 + -1x2 + 7x2 = 0

Combine like terms: 3x2 + -1x2 = 2x2
6 + -7x + 2x2 + 7x2 = 0

Combine like terms: 2x2 + 7x2 = 9x2
6 + -7x + 9x2 = 0

Solving
6 + -7x + 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'.
0.6666666667 + -0.7777777778x + x2 = 0

Move the constant term to the right:

Add '-0.6666666667' to each side of the equation.
0.6666666667 + -0.7777777778x + -0.6666666667 + x2 = 0 + -0.6666666667

Reorder the terms:
0.6666666667 + -0.6666666667 + -0.7777777778x + x2 = 0 + -0.6666666667

Combine like terms: 0.6666666667 + -0.6666666667 = 0.0000000000
0.0000000000 + -0.7777777778x + x2 = 0 + -0.6666666667
-0.7777777778x + x2 = 0 + -0.6666666667

Combine like terms: 0 + -0.6666666667 = -0.6666666667
-0.7777777778x + x2 = -0.6666666667

The x term is -0.7777777778x.  Take half its coefficient (-0.3888888889).
Square it (0.1512345679) and add it to both sides.

Add '0.1512345679' to each side of the equation.
-0.7777777778x + 0.1512345679 + x2 = -0.6666666667 + 0.1512345679

Reorder the terms:
0.1512345679 + -0.7777777778x + x2 = -0.6666666667 + 0.1512345679

Combine like terms: -0.6666666667 + 0.1512345679 = -0.5154320988
0.1512345679 + -0.7777777778x + x2 = -0.5154320988

Factor a perfect square on the left side:
(x + -0.3888888889)(x + -0.3888888889) = -0.5154320988

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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