x^2-4=3x^2-8x-4

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Solution for x^2-4=3x^2-8x-4 equation:


Simplifying
x2 + -4 = 3x2 + -8x + -4

Reorder the terms:
-4 + x2 = 3x2 + -8x + -4

Reorder the terms:
-4 + x2 = -4 + -8x + 3x2

Add '4' to each side of the equation.
-4 + 4 + x2 = -4 + -8x + 4 + 3x2

Combine like terms: -4 + 4 = 0
0 + x2 = -4 + -8x + 4 + 3x2
x2 = -4 + -8x + 4 + 3x2

Reorder the terms:
x2 = -4 + 4 + -8x + 3x2

Combine like terms: -4 + 4 = 0
x2 = 0 + -8x + 3x2
x2 = -8x + 3x2

Solving
x2 = -8x + 3x2

Solving for variable 'x'.

Reorder the terms:
8x + x2 + -3x2 = -8x + 3x2 + 8x + -3x2

Combine like terms: x2 + -3x2 = -2x2
8x + -2x2 = -8x + 3x2 + 8x + -3x2

Reorder the terms:
8x + -2x2 = -8x + 8x + 3x2 + -3x2

Combine like terms: -8x + 8x = 0
8x + -2x2 = 0 + 3x2 + -3x2
8x + -2x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
8x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '2x'.
2x(4 + -1x) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {0, 4}

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