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1.2 Algebra and Functions

1.2 Algebra and Functions

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Question 40

The quadratic equation 9x2+bx+16=09x^2 + bx + 16 = 09x2+bx+16=0 has one repeated real root.

Find bbb.

Circle your answer.

A

b=0b = 0b=0

B

b=±12b = \pm 12b=±12

C

b=±24b = \pm 24b=±24

D

b=±576b = \pm 576b=±576

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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