The equation x2+(2k−1)x+k+2=0x^2+(2k-1)x+k+2=0x2+(2k−1)x+k+2=0 has no real roots. Find the set of values of kkk.
8 exam-style questions on CCEA A Level Maths 1.1.4 Algebra and functions. Each one has a worked solution and a mark scheme showing where the marks go.