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1.2 Algebra and Functions

1.2 Algebra and Functions

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Question 43

Given that x>0x>0x>0, answer parts (a) and (b).

a.

Find the exact value of x x\,x that satisfies 7x54x12=147\displaystyle \dfrac{7x^{\frac54}}{x^{\frac12}}=\sqrt{147}x21​7x45​​=147​.

[4]
b.

Show that 8x−182x−3\dfrac{8x-18}{2\sqrt{x}-3}2x​−38x−18​, where x≠94x\neq\dfrac94x=49​, may be written as 2(2x+3)2(2\sqrt{x}+3)2(2x​+3).

[3]
Markscheme

1.2 Algebra and Functions Questions

  1. A Level
  2. /Maths
  3. /1.2 Algebra and Functions

302 exam-style questions on WJEC A Level Maths 1.2 Algebra and Functions, covering 1.2.1 Algebra and Functions, 1.2.2 Algebra and Functions, 1.2.3 Algebra and Functions, 1.2.4 Algebra and Functions, 1.2.5 Algebra and Functions, 1.2.6 Algebra and Functions, 1.2.7 Algebra and Functions, 1.2.8 Algebra and Functions, 1.2.9 Algebra and Functions, 1.2.10 Algebra and Functions, 1.2.11 Algebra and Functions, and 1.2.12 Algebra and Functions. Each one has a worked solution and a mark scheme showing where the marks go.

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