If d = 14in, what is the radius?
2 answers:
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Given:
To find:
The LCD of the fractions.
Solution:
LCD means least common denominator.
Let us find the least common multiplier for the denominator.
The denominators are .
Factor :
Take a common in first 2 terms and -6 common in next two terms.
Take out common factor (a - 1).
------------- (1)
Factor :
Using identity:
------------- (1)
From (1) and (2),
LCM of
Therefore LCD is (a - 1)(a - 6)(a + 6).
