Name:			Date:
Multiplying Rational Expressions.

1) $\frac{a+4}{4a-20}.\frac{7a-49}{a^2-3a-28}$	2) $\frac{5c^4+5c^3}{c+1}.\frac{1}{c+5}$
3) $\frac{30b^2}{b-10}.\frac{b^2-4b-60}{3b^3+18b^2}$	4) $\frac{10x}{35x^6-14x^5}.\frac{25x-10}{10x}$
5) $\frac{a+8}{2a+10}.\frac{a^2-3a-40}{a-8}$	6) $\frac{a-3}{a+2}.\frac{4a+8}{a-3}$
7) $\frac{41c}{64}.\frac{69}{72c^2}$	8) $\frac{5(x+7)}{9x}.\frac{5}{5(x+7)}$
9) $\frac{7c^4(c+10)}{(c-7)(c+10)}.\frac{c-7}{(c+7)(c+9)}$	10) $\frac{c+2}{c-8}.\frac{c+2}{2c+4}$
11) $\frac{15b^2-75b}{b-10}.\frac{1}{20b^3-100b^2}$	12) $\frac{49c}{74}.\frac{59}{90c}$
13) $\frac{6b}{12b^4-24b^3}.\frac{9b-18}{6b}$	14) $\frac{10}{b+2}.\frac{2b+10}{b+5}$
15) $\frac{28}{19}.\frac{24b}{39}$	16) $\frac{50}{91}.\frac{28b^2}{23}$

 

Answers:

1) $\frac{7}{4(a-5)}$	2) $\frac{5c^3}{c+5}$
3) $10$	4) $\frac{5}{7x^5}$
5) $\frac{a+8}{2}$	6) $4$
7) $\frac{2829}{4608c}$	8) $\frac{5}{9x}$
9) $\frac{7c^4}{(c+7)(c+9)}$	10) $\frac{c+2}{2(c-8)}$
11) $\frac{3}{4b(b-10)}$	12) $\frac{2891}{6660}$
13) $\frac{3}{4b^3}$	14) $\frac{20}{b+2}$
15) $\frac{672b}{741}$	16) $\frac{1400b^2}{2093}$