1.5: Single logarithm; hence solve a log equation

0606/11/O/N/18 — Question 7 · 9 marks · Log laws, Change of base, Equations

(a)
Express 2+3lgxlgy2 + 3\lg x - \lg y as a single logarithm to base 1010.
[3]
(b)(i)
Solve 6x+73x=06x + 7 - \dfrac{3}{x} = 0.
[2]
(b)(ii)
Hence, given that 6loga3+73log3a=06\log_{a} 3 + 7 - 3\log_{3} a = 0, find the possible values of aa.
[4]