What are the excluded values for the rational expression #(x^2+11x+28)/(x+4)#?

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Answer 1 · 2017-07-19T17:59:41

See a solution process below:

Because we cannot divide by #0# then:

#x + 4 != 0#

Or

#x + 4 - color(red)(4) != 0 - color(red)(4)#

#x + 0 != -4#

#x != -4#

The excluded value is: #x = -4#