Pick correct answer and show all the work for all 5 please

Algebra
Tutor: None Selected Time limit: 1 Day

Jun 18th, 2015

Thank you for the opportunity to help you with your question!

Hey I will provide the best answers for you , But there are so many questions and $1 is not worth doing this much

so I will explain 1st question



if  x> 2  then  x^2 - x -6 / x^2 -4

first x^2 -4  = (x+2) (x-2)  [ based on formula (a+b) (a-b) = a^2 - b^2 ]

and x^2 - x -6  = x^2 -3x +2x +6

                       = x(x-3) +2 (x+3)

                        = (x+2) (x -3)

so if  x> 2  then  x^2 - x -6 / x^2 -4   =  [ (x+2) (x-3) ] / [ (x+2) (x-2) ]

                                                         = x - 3 / x -2    ------->B



2). 4 - (-6) /  -5   = 4 + 6 / -5  = 10 / -5 = -2 --->D

post other question separatly

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 18th, 2015

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Jun 18th, 2015
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