Factorize -
Q.c) x 4 + x 2 + 1

Dear student,

We have, x4+x2+1adding and subtracting x2=x4+x2+x2+1-x2=x4+2x2+1-x2=x2+12-x2                    --[using a+b2=a2+b2+2ab]=x2+1+xx2+1-x       --[using a2-b2=a+ba-b]

Regards

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