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Description:
CAHSEE Math Algebra I: Drill 1, Problem 2. Find the negative reciprocal.
Transcript
- 00:03
Here’s an unshmoopy question to write about in your diary…
- 00:07
What is the negative reciprocal of negative b over 2a?
- 00:10
And here are the potential answers…
- 00:16
So… what is this question asking?
- 00:18
Can we find a reciprocal? Piece o’ cake.
Full Transcript
- 00:21
A reciprocal, remember, is just the flip-side of a fraction.
- 00:24
And any normal number, by the way, is a fraction.
- 00:27
That is, the number 4 is 4 over 1… so its reciprocal is 1 over 4 or one-fourth.
- 00:36
So do the same here with the fraction given… negative b over 2a.
- 00:41
BUT it also asks for the NEGATIVE reciprocal. A negative of a negative is a positive…
- 00:47
and we now have just 2a over b…
- 00:50
…so the answer is B.
- 00:52
As in, “Sponsored by Bounty – the quicker picker-upper.”
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