What does the word "organochlorines" mean?

Consider the quadratic equation ax^2+bx+5=0,where a, b and c are rational numbers and the quadratic has two distinct zeros. if one zero is irrational what is the other zero?

Plz halp. which statements are true about theme? check all that apply. 1.) themes are observations about life. 2.) themes can be stated in a sentence. 3.) themes and topics are the same thing. 4.) themes are messages a text conveys about a topic. 5.) examples of themes include loyalty, corruption, and greed. 6.)themes are rarely stated directly and need to be inferred by the reader.

The author’s purpose for including this in the introduction is