x^2-4x-4x-16=x^2+16

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Solution for x^2-4x-4x-16=x^2+16 equation:


Simplifying
x2 + -4x + -4x + -16 = x2 + 16

Reorder the terms:
-16 + -4x + -4x + x2 = x2 + 16

Combine like terms: -4x + -4x = -8x
-16 + -8x + x2 = x2 + 16

Reorder the terms:
-16 + -8x + x2 = 16 + x2

Add '-1x2' to each side of the equation.
-16 + -8x + x2 + -1x2 = 16 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-16 + -8x + 0 = 16 + x2 + -1x2
-16 + -8x = 16 + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-16 + -8x = 16 + 0
-16 + -8x = 16

Solving
-16 + -8x = 16

Solving for variable 'x'.

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

Add '16' to each side of the equation.
-16 + 16 + -8x = 16 + 16

Combine like terms: -16 + 16 = 0
0 + -8x = 16 + 16
-8x = 16 + 16

Combine like terms: 16 + 16 = 32
-8x = 32

Divide each side by '-8'.
x = -4

Simplifying
x = -4

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