SOLUTION: are my domains correct? √(x-5)^2: [5,inf) √(x^2-5): [5,inf) (√(25-x^2))/√(1+x): (-1,5]U[5,inf) Thanks!

Question 947497: are my domains correct?
√(x-5)^2: [5,inf)
√(x^2-5): [5,inf)
(√(25-x^2))/√(1+x): (-1,5]U[5,inf)
Thanks!
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
:
domain:
{ element : }; so, [5,inf) is correct

: => means cannot be equal to zero
it will be if =>= �
=> or
{ element : or }
so, domain is (,] U [,)

: (-1,5]U[5,inf)- correct

{ element : }
( ,]

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SOLUTION: are my domains correct? &#8730;(x-5)^2: [5,inf) &#8730;(x^2-5): [5,inf) (&#8730;(25-x^2))/&#8730;(1+x): (-1,5]U[5,inf) Thanks!