(4x^2-7x-3)+(6x^2-3x+1)-(3x^2-4x-6)=0

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Solution for (4x^2-7x-3)+(6x^2-3x+1)-(3x^2-4x-6)=0 equation:


Simplifying
(4x2 + -7x + -3) + (6x2 + -3x + 1) + -1(3x2 + -4x + -6) = 0

Reorder the terms:
(-3 + -7x + 4x2) + (6x2 + -3x + 1) + -1(3x2 + -4x + -6) = 0

Remove parenthesis around (-3 + -7x + 4x2)
-3 + -7x + 4x2 + (6x2 + -3x + 1) + -1(3x2 + -4x + -6) = 0

Reorder the terms:
-3 + -7x + 4x2 + (1 + -3x + 6x2) + -1(3x2 + -4x + -6) = 0

Remove parenthesis around (1 + -3x + 6x2)
-3 + -7x + 4x2 + 1 + -3x + 6x2 + -1(3x2 + -4x + -6) = 0

Reorder the terms:
-3 + -7x + 4x2 + 1 + -3x + 6x2 + -1(-6 + -4x + 3x2) = 0
-3 + -7x + 4x2 + 1 + -3x + 6x2 + (-6 * -1 + -4x * -1 + 3x2 * -1) = 0
-3 + -7x + 4x2 + 1 + -3x + 6x2 + (6 + 4x + -3x2) = 0

Reorder the terms:
-3 + 1 + 6 + -7x + -3x + 4x + 4x2 + 6x2 + -3x2 = 0

Combine like terms: -3 + 1 = -2
-2 + 6 + -7x + -3x + 4x + 4x2 + 6x2 + -3x2 = 0

Combine like terms: -2 + 6 = 4
4 + -7x + -3x + 4x + 4x2 + 6x2 + -3x2 = 0

Combine like terms: -7x + -3x = -10x
4 + -10x + 4x + 4x2 + 6x2 + -3x2 = 0

Combine like terms: -10x + 4x = -6x
4 + -6x + 4x2 + 6x2 + -3x2 = 0

Combine like terms: 4x2 + 6x2 = 10x2
4 + -6x + 10x2 + -3x2 = 0

Combine like terms: 10x2 + -3x2 = 7x2
4 + -6x + 7x2 = 0

Solving
4 + -6x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
0.5714285714 + -0.8571428571x + x2 = 0

Move the constant term to the right:

Add '-0.5714285714' to each side of the equation.
0.5714285714 + -0.8571428571x + -0.5714285714 + x2 = 0 + -0.5714285714

Reorder the terms:
0.5714285714 + -0.5714285714 + -0.8571428571x + x2 = 0 + -0.5714285714

Combine like terms: 0.5714285714 + -0.5714285714 = 0.0000000000
0.0000000000 + -0.8571428571x + x2 = 0 + -0.5714285714
-0.8571428571x + x2 = 0 + -0.5714285714

Combine like terms: 0 + -0.5714285714 = -0.5714285714
-0.8571428571x + x2 = -0.5714285714

The x term is -0.8571428571x.  Take half its coefficient (-0.4285714286).
Square it (0.1836734694) and add it to both sides.

Add '0.1836734694' to each side of the equation.
-0.8571428571x + 0.1836734694 + x2 = -0.5714285714 + 0.1836734694

Reorder the terms:
0.1836734694 + -0.8571428571x + x2 = -0.5714285714 + 0.1836734694

Combine like terms: -0.5714285714 + 0.1836734694 = -0.387755102
0.1836734694 + -0.8571428571x + x2 = -0.387755102

Factor a perfect square on the left side:
(x + -0.4285714286)(x + -0.4285714286) = -0.387755102

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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