1. Write 3a^2b^3c^5/8x^4y^3z using no denominator. (No fraction line is nessassary. Use * for mulitiplication betweeen numbers)
2. Simplify: (39x^5z^4)^0 * 18x^2y
3. Simplify: 8x^3y^-2z^-4/6x^-1yz^-5
4. Evaluate for x=2 and y=3: z^2y^-3/x^-1y
5. Perform the indicated operations: 6a^2-5a-6/6a^2 * 9a^3/9a^2+27a+14