Plz help guys, it is a pretty easy sum

2 answers:

7 0

Answer:

a3+13a

Step-by-step explanation:

sorry I don't know how to solve this

3 0

Answer:+-3

Explanation:

I added 4 on both side so that a^2+1/a^2-2 becomes a^2+1/a^2+2 which is Special products of (a^2+1/a^2).

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Plz help guys, it is a pretty easy sum​