ACT Math 4.3 Pre-Algebra

ACT Math: Pre-Algebra Drill 4, Problem 3. Simplify the expression.

ACT Math	Pre-Algebra
ACT Mathematics	Pre-Algebra
Basic Operations	Exponents
Foreign Language	Arabic Subtitled Chinese Subtitled Korean Subtitled Spanish Subtitled
Language	English Language
Pre-Algebra	Exponents and roots The concept of exponents
Product Type	ACT Math

00:25

So here we have a to the 2x times a to the NEGATIVE 2x.

00:31

And we are adding the exponents... so in America... 2x minus 2x is ...what?

00:38

Yep. Zilch. Zip. Nada.

00:41

So what's a to the ... zero power?

00:43

Well, by definition -- any number to the zero power is ...1.

00:46

So a to the zero is 1, and the answer is B.

00:49

As in, "Base running."