What is the hcm of 24 and 78
2 answers:
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You could rewrite 
as
and be tempted to cancel out the factors of
. But this cancellation is only valid when 
.
When
, you end up with the indeterminate form 
, which is why 
is not a zero.
and be tempted to cancel out the factors of
When
__-____-1,58____+_____0_______-__1,58_____+____>x
Locol max: 0