If #a+b+c=0#, prove that #(a^2+b^2+c^2)^2=2(a^4+b^4+c^4)#?

1 Answer
Marko T.
Mar 15, 2018

Okay

Explanation:

I'm pretty sure this could've been done an easier way but I somehow managed to do it
But it would really take me to long to write it out here so I'm just gonna upload a picture of it

enter image source here

The picture was to big for me to upload it so I had to compress it a bit, I hope it's not too blurry

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