Question

Find the lowest common denominator of the following fractions.

A.) 24y2
B.) 24(y2 - 1)
C.) 24(y2 - 1)(y + 1)

Answer 1

B

Explanation:

Answer 2

B.) 24(y² -1)

Explanation:

The denominator of the first fraction is 2³(y +1).

The denominator of the second fraction is 2·3(y +1)(y -1).

The LCD is the product of the unique factors to their highest powers:

2³·3·(y +1)(y -1) = 24(y² -1)