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  1. 1
    by Hill, Gwenda, 1953-
    Published 2005
    Software Book
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    Maths.
  2. 2
    by Hill, Gwenda, 1953-
    Published 2006
    Software Book
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    Maths 2.1, 2.9 : AS 90284 Manipulate algebraic expressions and solve problems ; AS 90292 Solve straightforward trig[o]nometric equations /

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