\[\boxed{\text{86\ (86).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
Пояснение.
Решение.
\[\boxed{\text{86.\ }\text{еуроки}\text{-}\text{ответы}\text{\ }\text{на}\text{\ }\text{пятёрку}}\]
Пояснение.
Решение.
\[= \frac{(b - c) \cdot (b + c) + b^{2}}{b \cdot (b + c)} =\]
\[= \frac{b^{2} - c^{2} + b^{2}}{b \cdot (b + c)} = \frac{{2b}^{2} - c^{2}}{b \cdot (b + c)}\]
\[= \frac{x^{2} + x - x^{2} + 2x - 3x + 6}{x \cdot (x - 2)} =\]
\[= \frac{6}{x \cdot (x - 2)}\]
\[= \frac{m^{2} + n^{2}}{m^{2} - n^{2}}\]
\[= \frac{4a^{2} + 1}{4a^{2} - 1}\]
\[= \frac{4a}{4 - a^{2}}\]
\[= \frac{2p}{9p^{2} - 1}\]