Question

The L.C.M of 23 – 1 and x2 + x + 1 is
A
X – 1
B
x2 + x + 1
с
23 - 1
D
(x3 - 1) (x2 + x + 1)​

Answer 1

B(X2+x+1) option is correct

on multiplying (23-2) with X2+x+1 it comes to be

23x^2+23x+23-x^2-x-1

=22x^2+22x+22

taking 22common the result is x^2+x+1

so LCM is x^2+x+1. ( LCM is product of two number except common factors)

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