Another way of writing it is:
(k * k *k) + ((3 * K) * (3 * K))
16 febbraio 2016
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k^3 can be read as "k cubed" or "k to the 3rd power"
k^2 can be read as "k squared" or "k to the 2nd power"
Thus I would read it as "k cubed plus 3 k squared". There are a couple acceptable alternatives that are equally as correct. You could also say "3 times k" instead of simply "3k".
16 febbraio 2016
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