Find the least common denominator for the expression.
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A) (10x - 11) or (10x + 11)
B) (10x - 11)(10x + 11)
C) 12x(3x + 7)(10x - 11)(10x + 11)
D) 12x(3x + 7)

Question

Find the least common denominator for the expression.
-
A) (10x - 11) or (10x + 11) 
B) (10x - 11)(10x + 11) 
C) 12x(3x + 7)(10x - 11)(10x + 11) 
D) 12x(3x + 7)

Quizplus · Accepted Answer

A least common denominator is the smallest multiple of the denominators in the expression. However, since there are no actual fractions in the expression given, we can assume that the LCD will involve the factors of the given binomials, which are (10x - 11) and (10x + 11). The only answer choice that includes both of these factors is B. The expression given does not contain any fractions or rational expressions, therefore, there is no need to find a common denominator. Choice B (10x - 11)(10x + 11) is not a least common denominator, but it is the only option that is applicable.

Find the Least Common Denominator for the Expression