(x*x-2*x-8)=x*x-4

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Solution for (x*x-2*x-8)=x*x-4 equation: 


Simplifying
(x * x + -2x + -8) = x * x + -4

Multiply x * x
(x2 + -2x + -8) = x * x + -4

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

Remove parenthesis around (-8 + -2x + x2)
-8 + -2x + x2 = x * x + -4

Multiply x * x
-8 + -2x + x2 = x2 + -4

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

Add '-1x2' to each side of the equation.
-8 + -2x + x2 + -1x2 = -4 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-8 + -2x + 0 = -4 + x2 + -1x2
-8 + -2x = -4 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-8 + -2x = -4 + 0
-8 + -2x = -4

Solving
-8 + -2x = -4

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '8' to each side of the equation.
-8 + 8 + -2x = -4 + 8

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

Combine like terms: -4 + 8 = 4
-2x = 4

Divide each side by '-2'.
x = -2

Simplifying
x = -2

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