TMUA Specimen Paper 1 Q11 — Worked Solution

P1·Indices, Logarithms & Exponentials·5.5Specimen · P1 · Q11

hidden-quadraticsubstitutionsum-of-rootschange-of-base

The sum of the roots of the equation

2^{2 x} - 8 \times 2^{x} + 15 = 0

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