Which of the inequalities represents all values of x for which he product below is defined? (THE HECK DOES THIS MEAN)

Question

anonymous · Answer

attachment

campbell_st · Answer

the question is asking what is the smallest value of x that will give an answer in the set of real numbers... 

you don't want negatives in either square root... as the product will result in a negative value or complex number... 

so you are being asked, which of the 4 inequalities will always result in a zero or positive answer, which will be in the set of real numbers

anonymous · Answer

So I have to plug in each of those values for x?

anonymous · Answer

To find out whether they give a zero or a positive answer, right?

campbell_st · Answer

thats correct