exam Maths Puzzle Numerical Ability

Divide:

3a^4 - a^3b - 15a^2b^2 + 11ab^3 - 2b^4 by a^2 + 2ab - b^2

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exam Other Question

http://img213.imageshack.us/img213/7589/geometry2xy5.jpg

1) Referring to that picture, find the value of X, m<AOB, m<BOC, and m<AOD if m<AOB = 4x + 3, m<BOC = 7x, m<AOD = 16x - Determine if the lines are parallel, perpendicular or neither:

-4x + 3y = 4

-8x + 6y = 0