Question 558571
Find the domain of x in the expression square root of 36 minus X squared
The domain in the radican must always be≥0
So, we set it to zero and solve for x
36-x^2≥0
(6+x)(6-x)≥0
number line
<==+==-6]....-.....[6==+==>
Domain: (-&#8734;,-6] U [6, &#8734;)