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 .
9 exam-style questions on Edexcel A Level Old Maths Logs. Each one has a worked solution and a mark scheme showing where the marks go.