Question

упростите a^2-2a+1/2a+1:a-1/4a^2-1

Answer 1

$\frac{a^2-2a+1}{2a+1}: \frac{a-1}{4a^2-1}= \frac{(a-1)^2}{2a+1}* \frac{(2a+1)(2a-1)}{a-1}=(a-1)(2a-1)$