maths 數題，請幫忙解~(20分)

1. 設f(x) 為三次多項式(polynomial)，if f(1)=f(2) and f(0)= f(-1), then f(-3/2) - f(1) = ??

2. 在平面上，A同B的distance is 6, 有直線L1 同 L2, 它們與A點之DISTANCE IS 2 , 與 B 的DISTANCE IS 5, THEN L1同L2 既交角為？

3. 有5班抽考中英數，每科各抽2班考，但同1班唔可以考晒3科，咁有幾多種考試的抽考情況？

4. A= [0 1 1]
[-1 0 1] <======MATRICE , 咁A^3=?? A^10= ????
[-1 -1 0]

5. f(x) = x^3 + ax^2 + 5x - 8, if f(x) is an increasing function, find the range of a.

唔該各位幫幫手……要step…