91Ó°ÊÓ

Perform the indicated operation: \([(3 a-9 b) /(x-5)] \cdot[(x y-5 y) /(a x-3 b x)]\).

Combine into a single fraction in lowest terms. (a) \(\\{6(a+1) /(a+8)\\}-\\{3(a-4)\\} /\\{(a+8)\\}-\\{2(a+5)\\} /\\{(a+8)\\}\) (b) \(\\{(7 x-3 y+6)\\} /(x+y)-\\{2(x-4 y+3)\\} /(x+y)\) (c) \(\\{(5 x+2)\\} /(x-6)-\\{3(x+4)\\} /(x-6)-\\{(x-7)(x-6)\\}\)

(1)What is the difference between a polynomial and a multinomial? (2) What is the degree of a monomial?