+0  
 
0
31
1
avatar+1347 

Help needed urgent

 

Find the domain of $\frac{x^2 + 10x + 21}{x^2 + 4x + 5} + \sqrt{x - 4}$.  (Express your answer using interval notation.)

 Aug 7, 2023
 #1
avatar+129690 
+1

The first function is defined  for  all x since  no real number makes the  denominator = 0

 

So....it's only the  second  function that we need to  consider

 

The quantity under the  root cannot be less than 0....so.......x cannot  be  less than 4

 

So  the domain is  [ 4, infinty )

 

cool cool cool

 Aug 7, 2023

1 Online Users