How to prove this inequality?

[patent cove]

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2. Wait patiently for a helper to come along.
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   +close
   

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[hot tusk]

@sharp atlas if you’re done with the thread please type +close, or post any additional questions you have!

[sharp atlas]

"

@hot tusk I am

unable to render

its a good question

just a second

I have never rendered before

or used this rene thing

[hot tusk]

ah

there is a good chance i will not be able to help btw 😔

[sharp atlas]

Ok

well

thats understandable

Why are the words sticking together

[hot tusk]

If $a , b , c \in \mathbb{R}^+$ and $a + b + c = 3;\$
Prove that:
$ab^2 + bc^2 + ca^2 \leq 4 $

[grand finch]

!𒐪 ɹɐupoɯ⇂ㄥ8𝟝 𒐪!

[hot tusk]

put text outside dollar signs

[sharp atlas]

Thanks

[hot tusk]

or else it treats it like a variable string

[sharp atlas]

Ohhhhh

Okay

Well

should I make a new thread

so the question actually gets pinned?

[hot tusk]

i cannot help much other than say “am gm idk” and “maybe derivative”
sorry

[sharp atlas]

Im gonna do that

+close