(2x^2-2x-4)+(-4x^2+5x-1)=

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Solution for (2x^2-2x-4)+(-4x^2+5x-1)= equation:


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

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

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

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

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

Reorder the terms:
-4 + -1 + -2x + 5x + 2x2 + -4x2 = 0

Combine like terms: -4 + -1 = -5
-5 + -2x + 5x + 2x2 + -4x2 = 0

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

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

Solving
-5 + 3x + -2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
2.5 + -1.5x + x2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + -1.5x + -2.5 + x2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + -1.5x + x2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -1.5x + x2 = 0 + -2.5
-1.5x + x2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
-1.5x + x2 = -2.5

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = -2.5 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = -2.5 + 0.5625

Combine like terms: -2.5 + 0.5625 = -1.9375
0.5625 + -1.5x + x2 = -1.9375

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = -1.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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