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Academics – Mathematics : 2017/DEC/04

Question

Q4. a. Solve EACH of the following equation for x:

(i) 8 = 16e^-0.2x (4)

(ii) ln(ex + 25) = 4.2 (4)

(iii) 3^{3 + 4x} = 27^2x-1 (4)

b. Express the following in its simplest form: (a² b⁴ )^3/4/√(ab² ) (4)

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