exam Maths Puzzle Numerical Ability

Factor the trinomial. Factor out all common monomials first.

9 x 3 - 9 x 2 + 2 x.

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a track is in the shape of a rectangle and two semicircles . the ractangle is 4 yards by 10 yards to the nearest yard what is the perimeter if the track Everyone shook hands at a party. There were 190 handshakes in all. How many were at the party? (From Algebra by Keedy, Bittinger, Sith and Orfan, p. 221)
I think I can get the