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Express 1 + 2log base 10 of 3 in the form log base 10 of q.
waec-mathematics-2020 math waec-2020 ssce-exam-2020
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Express 1 + 2log103 in the form log10q.

A. log10 90

B. log10 19

C. log10 9

D. log10 6

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james_mark
Asked by james_markrep:568
School not set Nigeria
18 August 2020

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alberteinstein
Alberteinstein answeredrep:206
School not set Nigeria
08 September 2020
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1 + 2log103

But since log1010 = 1, the above expression becomes:

log1010 + 2log103

Also, 2log103 = log1032 = log109

Thus, the expression becomes:

log1010 + log109

= log10(10 x 9)

= log10 90

Ans A

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