ACT Math: Pre-Algebra Drill 4, Problem 3. Simplify the expression.
|Foreign Language||Arabic Subtitled|
|Pre-Algebra||Exponents and roots|
The concept of exponents
|Product Type||ACT Math|
So here we have a to the 2x times a to the NEGATIVE 2x.
And we are adding the exponents... so in America... 2x minus 2x is ...what?
Yep. Zilch. Zip. Nada.
So what's a to the ... zero power?
Well, by definition -- any number to the zero power is ...1.
So a to the zero is 1, and the answer is B.
As in, "Base running."