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Unattributed TMUA Mock Set B Paper 1 · Q6

Paper 1Algebra

Find the sum of the real roots of the equation 49x−7x+1+12=049^x-7^{x+1}+12=0.

A11
B77
Clog⁡1012\log_{10}12
Dlog⁡10(1249)\log_{10}\left(\frac{12}{49}\right)
Elog⁡1012log⁡107\frac{\log_{10}12}{\log_{10}7}

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