Express 1 + 2 log10³ in the form log10^{9}

Correct Answer is : log1090^{90}90

Correct Answer is : log1090^{90}90

Test Index

WAEC Mathematics 2020 Paper

Question : 4

Total: 48

^{3}

^{9}

Solution:

1 + 2log $10^{3}$

= log $10^{10} + \log_{10}^{3^{2}}$

= log $10^{10} + \log_{10}^{9}$

= log $10^{10 \times 90}$ = log $10^{90}$

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