(2x^2-5x-4)-(4x^2-3x-2)=

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Solution for (2x^2-5x-4)-(4x^2-3x-2)= equation:


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

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

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

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

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

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

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

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

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

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-2'.
-2(1 + x + x2) = 0

Ignore the factor -2.

Subproblem 1

Set the factor '(1 + x + x2)' equal to zero and attempt to solve: Simplifying 1 + x + x2 = 0 Solving 1 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-1' to each side of the equation. 1 + x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x + x2 = 0 + -1 x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 x + x2 = -1 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. x + 0.25 + x2 = -1 + 0.25 Reorder the terms: 0.25 + x + x2 = -1 + 0.25 Combine like terms: -1 + 0.25 = -0.75 0.25 + x + x2 = -0.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -0.75 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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