Use the substitution u=x3+5u = x^3 + 5u=x3+5 to find ∫3x2x3+5dx\displaystyle \int \frac{3x^2}{x^3 + 5} dx∫x3+53x2dx
119 exam-style questions on CCEA A Level Maths 3.6.4 Integration (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.