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Select each correct answer 

 Oct 18, 2018
 #1
avatar+100588 
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The denominator cannot  = 0

So...set the denominator  = 0  to find the x values that are excluded from the domain

 

So we have

 

x^2 + 2x  - 3   =  0      factor

 

(x + 3) ( x - 1)  =  0

 

Set  each factor to 0 and solve for x  and we get that

 

x = -3     and  x  = 1

 

And these are the two values excluded from the domain

 

[ Second and third answers  ]

 

 

cool cool cool

 Oct 18, 2018

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