book Maths Puzzle Numerical Ability

Reduce the following expression to lowest terms:

x^2 - 9x + 14/5x^2 - 20

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book Other Question

I'm having a very difficult time trying to answer this question. Here it is:
Ari Gant and Charles Pompuss took turns driving on a round trip using the same route both ways. Ari How many 3 digit counting numbers are even?