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Number and Quantity Videos 14 videos
Number Sense: Drill Set 4, Problem 3. Simplify the expression.
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SAT Math 6.4 Algebra and Functions 486 Views
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Description:
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.
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