Question

Dado log 2=x,calcule log 20/2

Answer 1

$\frac{log20}{2}=\frac{log(10.2)}{2}=\frac{log10+log2}{2}=\frac{1+x}{2}$

Answer 2

$\boxed{\boxed{log~2=x}}$
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$\frac{log~20}{2}=\frac{log~(2*10)}{2}\\\\\frac{log~20}{2}=\frac{log~2+log~10}{2}\\\\\frac{log~20}{2}=\frac{x+1}{2}$