The equation x2+(n+1)x+(3−3n)=0x^2 + (n + 1)x + (3 - 3n) = 0x2+(n+1)x+(3−3n)=0 where n n\,n is a constant, has two distinct real roots.
Find the set of possible values for nnn, giving your answer in set notation.
63 exam-style questions on AQA A Level Maths 1.5.3 Quadratic functions. Each one has a worked solution and a mark scheme showing where the marks go.