Find, to 3 significant figures, the value of x x\,x for which 5x=75^x = 75x=7 .
Solve the equation 52x−12(5x)+35=05^{2x} - 12(5^x) + 35 = 052x−12(5x)+35=0 .
Practise Edexcel A Level Old Maths Logs with exam-style questions for A Level Old Maths. 16 questions, matched to the Edexcel A Level Old Maths (9371) specification and written in Unit exams C1, C2, C3 and C4 plus two applied units (e.g. S1 and M1) 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.