Proof

[pale flower]

1. Do not ping the Moderators, unless someone is breaking the rules.
2. Do not ping the Helper Moderators, unless there is a conflict between helpers.
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+close
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[high pendant]

I've been stuck on this for a while in my homework and I'm convinced it's not possible to prove

[covert hound]

Can you prove that if p^2 is even then p is even ?

[high pendant]

How would I prove p² is even

[vernal saddle]

try squaring (2n+1)^2 show it is odd then use contrapositive of if p is odd then p^2 is odd

contrapositive of: p -> q is (not q -> not p)

[vernal saddle]

square both sides then isolate for p^2

[covert hound]

Well square each side

Then as Sophie said prove that if p is odd then p^2 is odd (it’s equivalent)

[high pendant]

+close

[pseudo knoll]

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