(7x^2-4x+5)-(3x^2-6x+2)=0

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Solution for (7x^2-4x+5)-(3x^2-6x+2)=0 equation:


Simplifying
(7x2 + -4x + 5) + -1(3x2 + -6x + 2) = 0

Reorder the terms:
(5 + -4x + 7x2) + -1(3x2 + -6x + 2) = 0

Remove parenthesis around (5 + -4x + 7x2)
5 + -4x + 7x2 + -1(3x2 + -6x + 2) = 0

Reorder the terms:
5 + -4x + 7x2 + -1(2 + -6x + 3x2) = 0
5 + -4x + 7x2 + (2 * -1 + -6x * -1 + 3x2 * -1) = 0
5 + -4x + 7x2 + (-2 + 6x + -3x2) = 0

Reorder the terms:
5 + -2 + -4x + 6x + 7x2 + -3x2 = 0

Combine like terms: 5 + -2 = 3
3 + -4x + 6x + 7x2 + -3x2 = 0

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

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

Solving
3 + 2x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
0.75 + 0.5x + x2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + 0.5x + -0.75 + x2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + 0.5x + x2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + 0.5x + x2 = 0 + -0.75
0.5x + x2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
0.5x + x2 = -0.75

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = -0.75 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = -0.75 + 0.0625

Combine like terms: -0.75 + 0.0625 = -0.6875
0.0625 + 0.5x + x2 = -0.6875

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = -0.6875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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