Question

Find the least common denominator for the following rational expressions.

(r – 1)(r – 4)(r – 5)

(r – 1)(r + 4)(r – 5)

(r – 1)(r + 1)(r – 4)(r – 5)

(r – 1)(r + 1)(r + 4)(r – 5)

Answer 1

C is the correct answer on e2020

Explanation:

Answer 2

C

Explanation:

For edge(: