What are the exclude values of the expression $(64 - 8x)/(8x + 64)$ ?

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Answer 1 · 2017-05-19T13:22:50

See a solution explanation/process below:

We cannot divide by $0$ , therefore:

$8x + 64$ cannot equal 0#.

To find the excluded values set $8x + 64$ equal to $0$ and solve for $x$ :

$8x + 64 = 0$

$8x + 64 - color(red)(64) = 0 - color(red)(64)$

$8x + 0 = -64$

$8x = -64$

$(8x)/color(red)(8) = -64/color(red)(8)$

$(color(red)(cancel(color(black)(8)))x)/cancel(color(red)(8)) = -8$

$x = -8$

The excluded value is $x = 8$

What are the exclude values of the expression (64 - 8x)/(8x + 64)(64 - 8x)/(8x + 64)?