Question

its very urgent , please​

Answer 1

Step-by-step explanation:

N=x+3

Sum=x^4-81

Now,

Mean=sum/N

=x^4-81=/x+3

={(x^2)^2-(9)^2}/x+3

={(x^2+9)(x^2-9)}/x+3

={(x^2+9)(x+3)(x-3)}/(x+3)

=(x^2+9)(x-3)

Answer 2

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