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4MA1/1FR Jun 2018, Question 8: Index Laws with Letters

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1FR (Foundation) · Calculator · 3 marks

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The question, in short

Simplify three short algebraic expressions involving repeated multiplication of a variable, a product of two terms, and combining like terms.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Part (a) · 1 mark

Write y × y × y as a single power of y.

  1. 1y × y × y = y³

Answery³

Part (b) · 1 mark

Simplify the product 3c × 2d into one term.

  1. 13c × 2d = 6cd

Answer6cd

Part (c) · 1 mark

Simplify 2k − 4k + 3k by combining the like terms.

  1. 12k − 4k + 3k = (2 − 4 + 3)k = 1k = k

Answerk

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