By completing the square, find in terms of the constant p p\,p the roots of the equation
x2+px+4=0
x^2+px+4=0
x2+px+4=0
[3]
b.
Hence find the set of values of p p\,p for which the equation has no real roots.
[1]
Markscheme
2.2 Completing the Square Questions
6 exam-style questions on Edexcel AS Level Maths 2.2 Completing the Square. Each one has a worked solution and a mark scheme showing where the marks go.