ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Pre-Algebra Videos 217 videos
Who wants to be a millionaire? In this video, learn about compound interest, interest rates, and the compound interest formula. You'll be buying th...
ACT Math: Pre-Algebra Drill 5, Problem 2. If a and b are prime numbers, how many factors does ab have?
SAT Math 6.4 Algebra and Functions 486 Views
Share It!
Description:
SAT Math 6.4 Algebra and Functions
SAT Math 6.4 Algebra and Functions
Transcript
- 00:02
Here's your shmoop du jour...
- 00:04
A to the power of x + y times a to the power of x - y equals... what?
- 00:12
And here are the potential answers...
- 00:16
So this is just a SUPER simple question about exponent rules.
- 00:23
We are multiplying two exponents with the same base...
Full Transcript
- 00:27
which means we can just ADD our exponents.
- 00:29
Now if you didn't know that, oh are you screwed.
- 00:33
X + y + x - y equals... 2x.
- 00:38
So we have a to the power of 2x.
- 00:40
And... our answer's C.
Related Videos
SAT Math 2.1 Geometry and Measurement. What is the measure of angle z in terms of x and y?
In 2014, the unemployment rate of one county in California was 7%. In another county, the unemployment rate was 11%. Which of the following express...
Angela is making cookies for a bake sale. She expects each batch of her cookies to sell for $40. It costs her $10 to make one batch of cookies, and...