Expert: Richard J. Raridon - 4/4/2006

Question
Please! I need help answering these 7 questions:
1) -6a/5 * 1/6a^2
2) 8a/7b * 7a^2/-2
3) 5s/-2t * 6s/-5
4)x+6/x^2+2x-24 * x-4/2
5) a+8/a^2+11a+24 * a+3/-2
6)3a/a^2-25 * a-5/a
7)2x/x^2-64 * x+8/x^2
they're simplifying the product of a rational expression
/fraction
*multiply

Answer
1) you can also write it (-6a/5)[1/(6a^2)] which = -1/(5a)
2) -4a^3/b
3) -3s^2/t
4) you need to write it [(x+6)/(x^2+2x-24)](x-4)/2
since x^2+2x-24 = (x+6)(x-4) the answer is 1/2
5) [(a+8)/(a^2+11a+24)](a+3)/(-2) = -1/2
6) [3a/(a^2-25)](a-5)/a = 3/(a+5)
7) [2x/(x^2-64)](x+8)/x^2 = 2/[x(x-8)]