How do I solve a cubic?
You can solve a cubic by applying factor theorem. This is where you plug different values for x into your cubic f(x) = ax^3 + bx^2 + cx + d such that x is a factor of d, until you find a value t for which f(t) = 0. From here factorise the cubic and solve the remaining quadratic equation by the same method, by factorisation, completing the square or by the quadratic formula.
HW
Related Maths A Level answers
All answers ▸Using first principles find the differential of x^2
What is the "chain rule"?
Find the integral of the following equation: y = cos^2(x)
a typical question would be a setof parametric equations y(t) and x(t), asking you to find dy/dx and then the tangent/normal to the curve at a certain point (ie t = 2)