1. Simplify and evaluate: (42x3y-2z-3/x-5y8z-9)2
2. Convert to scientific notation (here you may use x as multiplication): 0.00083
3. For f(x) = 6x - 7, find f(2).
4. Perform the indicated operations: (-x2 - 6x + 3) - (-9x2 + x - 1) - (x2 + 5x - 2)
5. Use FOIL to multiply: (8x - 1)(2x + 5)
6. Multiply: (x4 - 4x2 - 5)(x2 - x + 2)
7. Multiply the polynominals: (3t - 2)(2t + 3)
8. Give an example of using the distributive property for a negative monomial times a trinomial with different signs on the terms [for example: -3x(2xy + 3y - 2x)] and show each step of the distribution. Why do you think many students make sign errors on this type of problem? What would be your advice to a student who has trouble with the signs?