Which of the following is the product of the rational expressions shown below? 2x^3/x+5÷x-5/3x-1 A 2x4/3x2-x
B 2x3+3x-1/x2+25
C 2x4-10x3/3x2+14x-5
D 6x4-2x3/x2-25

Step-by-step explanation:instead, try making the subscripts and superscripts stand out:

                         n-1

a    =  a         * r

 n         n-1

Believe me, it's worth the extra work to do this!!

Given the sequence   -3, -6, -12, -24, you can easily see that the first term,

a         is    -3.  The common factor is 2.  Note how (-3)*2=-6, and so on.

  1

So, a       = -3 and r=2.

        1

So the formula for this geometric sequence is  

                  n-1

a     =  -3*2

  n