Question

Срочно!! Найти t, если lgt = lg(m^2 - s^2) - 2lg(m + s)

Answer 1

$lgt=lg(m^{2}-s^{2})-2lg(m+s)\\\\lgt=lg(m^{2} -s^{2})-lg(m+s)^{2}\\\\lgt=lg\frac{m^{2}-s^{2}}{(m+s)^{2}}\\\\lgt=lg\frac{(m-s)(m+s)}{(m+s)(m+s)}\\\\lgt=lg\frac{m-s}{m+s}\\\\t=\frac{m-s}{m+s}$