(-6x^2+8x)+(-8+x)-(2x^2+4)=

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Solution for (-6x^2+8x)+(-8+x)-(2x^2+4)= equation:


Simplifying
(-6x2 + 8x) + (-8 + x) + -1(2x2 + 4) = 0

Reorder the terms:
(8x + -6x2) + (-8 + x) + -1(2x2 + 4) = 0

Remove parenthesis around (8x + -6x2)
8x + -6x2 + (-8 + x) + -1(2x2 + 4) = 0

Remove parenthesis around (-8 + x)
8x + -6x2 + -8 + x + -1(2x2 + 4) = 0

Reorder the terms:
8x + -6x2 + -8 + x + -1(4 + 2x2) = 0
8x + -6x2 + -8 + x + (4 * -1 + 2x2 * -1) = 0
8x + -6x2 + -8 + x + (-4 + -2x2) = 0

Reorder the terms:
-8 + -4 + 8x + x + -6x2 + -2x2 = 0

Combine like terms: -8 + -4 = -12
-12 + 8x + x + -6x2 + -2x2 = 0

Combine like terms: 8x + x = 9x
-12 + 9x + -6x2 + -2x2 = 0

Combine like terms: -6x2 + -2x2 = -8x2
-12 + 9x + -8x2 = 0

Solving
-12 + 9x + -8x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
1.5 + -1.125x + x2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + -1.125x + -1.5 + x2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + -1.125x + x2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + -1.125x + x2 = 0 + -1.5
-1.125x + x2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
-1.125x + x2 = -1.5

The x term is -1.125x.  Take half its coefficient (-0.5625).
Square it (0.31640625) and add it to both sides.

Add '0.31640625' to each side of the equation.
-1.125x + 0.31640625 + x2 = -1.5 + 0.31640625

Reorder the terms:
0.31640625 + -1.125x + x2 = -1.5 + 0.31640625

Combine like terms: -1.5 + 0.31640625 = -1.18359375
0.31640625 + -1.125x + x2 = -1.18359375

Factor a perfect square on the left side:
(x + -0.5625)(x + -0.5625) = -1.18359375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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