SAT Math Tips Post
-POSITIVE AND NEGATIVE ROOTS. Although you might think that the root of 9 is "positive or negative" 3, the rules of math say that it's actually positive 3 only. Here's how to remember it: if you see the root symbol, then you want the positive answer only. However, if the question says x2 = 9, then the answer could be either positive or negative 3. Strange, I know, but that's the rule. Beware: this concept appeared on both the October and November 2018 exams!