It is given that f(x)=x3+6x2+4x−15f(x) = x^3 + 6x^2 + 4x - 15f(x)=x3+6x2+4x−15
Use the factor theorem to show that x=−3x = -3x=−3 is a solution of the equation f(x)=0f(x) = 0f(x)=0.
Find the other solutions of f(x)=0f(x) = 0f(x)=0, giving your answers to 2 decimal places.
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.