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1 markSimplifying Algebraic Expressions

CSEC Mathematics · January 2009 · Paper 2 · Question 2(d)(ii)

A drinking straw of length 21 cm is cut into 3 pieces. The length of the first piece is x cm. The second piece is 3 cm shorter than the first piece. The third piece is twice as long as the first piece.

Write an expression, in terms of x, to represent the sum of the lengths of the three pieces of drinking straw.

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Other parts of this question

  1. 2(a)Simplify, expressing your answer as a single fraction: 2m/n - 5m/(3n).[3 marks]
  2. 2(b)If a * b = a² - b, evaluate 5 * 2.[1 mark]
  3. 2(c)Factorize completely 3x - 6y + x² - 2xy.[2 marks]
  4. 2(d)(i)State, in terms of x, the length of EACH of the pieces.[2 marks]
  5. 2(d)(iii)Hence, calculate the value of x.[3 marks]

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