By completing the square, find in terms of the constant k k\,k the roots of the equation
x2+kx−6=0 x^2 + kx - 6 = 0 x2+kx−6=0Hence find the exact roots of the equation x2+4x−6=0x^2 + 4x - 6 = 0x2+4x−6=0
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.