If the roots are irrational the discriminants arent a perfect squre
<h2>Answer</h2>

<h2>Explanation</h2>
Remember that the square root function is not defined, in the set of real numbers, for negatives values, so its radicand (the thing inside the square root) must be zero or bigger than zero. In other words, to find the domain of a square root function, you should set the thing inside the radical bigger or equal to zero and solve for x. Let's find the domain of each one of our functions:
For 
The thing inside the square root is
, so we are setting that bigger or equal than zero and solve for x to find the domain of the function:

domain
For 

domain
For
and

domain
As you can see, the only one that has the domain
is the first choice.
Step-by-step explanation:
Combine like terms: 40 + 60 = 100 2x = 100 Divide each side by '2'. x = 50 Simplifying x = 50.
Answer:JT=15
Step-by-step explanation:
Answer:
12.57
Step-by-step explanation:
hope this helps