this post was submitted on 11 Oct 2023
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submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
 
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[–] [email protected] 19 points 1 year ago* (last edited 1 year ago) (26 children)

I know I'm bad at math but I don't understand how 2x0=0 but 2^0=1

How are they different answers when they're both essentially multiplying 2 by zero?

Someone with a bigger brain please explain this

Edit: I greatly appreciate all the explanations but all they've done is solidify the fact that I'll never be good at math 😭

[–] [email protected] 15 points 1 year ago* (last edited 1 year ago) (8 children)

This isn't strictly speaking a proof, but it did help me to accept it as it demonstrates the function that makes it 1.

2^3 = 2x2x2

2^2 = 2x2

(2^3)/(2^2) = (2x2x2)/(2x2) = 2

= 2^(3-2)

In general terms:

(x^a)/(x^b) = x^(a-b)

If a and b are the same number this is x^0 and obviously (x^a)/(x^a) is one because anything divided by itself is 1.

Hope that helps

[–] [email protected] 5 points 1 year ago (7 children)

Yes, of course, obviously...JFC, what??

[–] [email protected] 2 points 1 year ago

That was pretty complicated, here is a simpler answer I hsve come up with:

1=(2x2x2)/(2x2x2)=2³/2³=2³⁻³=2⁰

If that makes sense to you...

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