Question

Plz help i have tried to solve this question many times but didn't get the answer​

Answer 1

Answer:

40/13

Step-by-step explanation:

its an easy question.

just substitute 1 in place of u, we get

$\frac{1^4-81}{1^3-27}$

=(1-81)/(1-27)

=(-80)/(-26)

=80/26

=40/13

HOPE IT HELPS,

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