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1.5.6 Polynomials and rational expressions

1.5.6 Polynomials and rational expressions

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Question 21

Prove that $x^2 - 4x + 7$ is positive for all real values of $x$ .

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Markscheme

1.5.6 Polynomials and rational expressions Questions

A Level
Maths
1.5.6 Polynomials and rational expressions

113 exam-style questions on AQA A Level Maths 1.5.6 Polynomials and rational expressions. Each one has a worked solution and a mark scheme showing where the marks go.

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