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1.2 Algebra and Functions

1.2 Algebra and Functions

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Question 12

Let p(x)=12x3−8x2−3x+2p(x) = 12x^3 - 8x^2 - 3x + 2p(x)=12x3−8x2−3x+2.

a.

Prove that (2x−1)(2x - 1)(2x−1) is a factor of p(x)p(x)p(x).

[2]
b.

Factorise p(x)p(x)p(x) completely.

[3]
c.

Prove that there are no real solutions to the equation

12sec⁡2θ+2cos⁡θ3=83sec⁡θ+1 \frac{12 \sec^2 \theta + 2 \cos \theta}{3} = \frac{8}{3} \sec \theta + 1 312sec2θ+2cosθ​=38​secθ+1
[4]
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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