Question

Multiply and simplify:http://roads.advancedacademics.com/contentserver/content/roadssection/277572/questions/9hw2/9hw2_q8.gif

A: http://roads.advancedacademics.com/ContentServer/Content/RoadsSection/277572/Questions/9HW2/9HW2_q8a1.gif

B: http://roads.advancedacademics.com/ContentServer/Content/RoadsSection/277572/Questions/9HW2/9HW2_q8a2.gif

C: http://roads.advancedacademics.com/ContentServer/Content/RoadsSection/277572/Questions/9HW2/9HW2_q8a3.gif

Answer 1

You want to start by factoring what you can factor.

x^2 -9 is the difference of squares so it becomes (x+3)(x-3)
x^2 +20x + 99 factors to (x+9)(x+11)

that leaves (x+11)(x+3)(x-3) in your numerator
and (x+3)(x+11)(x+9) in your denominator.

If you cancel terms, what is your final answer?