It is given that
f(x)=x3+2x2−11x−12f(x) = x^3 + 2x^2 - 11x - 12f(x)=x3+2x2−11x−12
a.
Use the factor theorem to show that (x+4)(x + 4)(x+4) is a factor of f(x)f(x)f(x).
[2]
b.
Hence factorise f(x)f(x)f(x) completely.
[3]
Markscheme
1.2.8 Algebra and Functions Questions
72 exam-style questions on WJEC A Level Maths 1.2.8 Algebra and Functions. Each one has a worked solution and a mark scheme showing where the marks go.