Use the substitution u=x2+5u = x^2 + 5u=x2+5 to find ∫123x(x2+5)2dx\int_1^2 3x(x^2 + 5)^2 dx∫123x(x2+5)2dx.
Practise Edexcel A Level Maths 11.5 Integration by Substitution with exam-style questions for A Level Maths. 59 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.