exam Maths Puzzle Numerical Ability

how do you do partial fraction decomposition?? Like on a problem such as: 1/(x^2+x)???

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exam Other Question

On a 130 mile trip, a car traveled at an average speed of 55 mph and then reduced its speed to 40 mph for the remainder of the trip. The trip took a total of 2.5 hours. For how long did the car travel at 40 mph? determine the quadratic function with
a) vertex(5,2); step pattern 2,6,10,14..
b)vertex (-1,-4) point (7,5)
c)vertex(7, -6) y-int: -10

*can you give full solutions plz :)