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ACT Math: Pre-Algebra Drill 5, Problem 2. If a and b are prime numbers, how many factors does ab have?
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If fleeing criminals always fled the scene of the crime at perfect right angles, it would be much easier to determine their whereabouts. Fortunatel...
SAT Math 6.4 Algebra and Functions 486 Views
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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.
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