2. which expression is in simplified form for the given expression and states the correct variable restriction? u^2-4 over (u-6)(u-2)

a. u + 2 over u - 6, u - 6
b. 1 over 2u + 12, u - 6
c. 1 over u - 3, u - 3
d. u + 2 over u - 6, u2, u6

3. multiply. 5a3 . 2a over ab . 35

a. 2a3 over 7
b. a3 over 7b
c. 2a2 over 7
d. 2a3 over 7b

4. multiply. (a-4)(a+3) . 2a3 over a2-4a . (a+3)(a-1)

a. 2 over a - 1
b. 2a2 over a-1
c. 2a over a + 1
d. 2a over a-1

5. divide and simplify. 3x^3 over 4y divided x over 9

a. 27x over 4y^2
b. 27x over 4y^2
c. x^3 over 12
d. 27x^2 over 4