Question

99 POINTS!!! Find the least common denominator for these two rational expressions b/b^2+2b+1 -6/b^2+7b+6

Answer 1

Answer:

49b^2 -36 = (7b -6)(7b +6)

so because there you missed some signs in these wrote choices  

hope helped  

Step-by-step explanation:

Answer 2

Answer:

$(b+1)^2(b+6)$

Step-by-step explanation:

The given rational expression is:

$\frac{b}{b^2+2b+1}-\frac{6}{b^2+7b+6}$

We factor the denominators to get:

$\frac{b}{(b+1)^2}-\frac{6}{(b+1)(b+6)}$

The least common denominator is the product of the highest powers of the common factors of the denominators.

Therefore the least common denominator is:

$(b+1)^2(b+6)$