Question

срочно нужен полный ответ каждого​

Answer 1

Ответ:

d

$2lg(3) + 3lg(2) = lg( {3}^{2}) + lg( {2}^{3} ) = \\ = lg(9) + lg(8) = lg(9 \times 8) = lg(72)$

e

$\frac{1}{2} lg(4) + lg(3) = lg( \sqrt{4}) + lg(3) = \\ = lg(2) + lg(3) = lg(2 \times 3) = lg(6)$

f

$1 - 3lg(2) + lg(20) = 1 - lg( {2}^{3}) + lg(20) = \\ = 1 - lg(8) + lg(20) = lg( \frac{20}{8}) + 1 = lg( \frac{5}{2} ) + lg(10) = \\ = lg( \frac{5}{2} \times 10) = lg(25)$