$3$\displaystyle{\int _{{\alpha}}^{{\beta}} $ x- {\alpha} $ $ x- {\beta} $ dx=- \frac{\hspace{2} { $ {\beta}- {\alpha} $ }^{3} \hspace{2}}{\hspace{2}6\hspace{2}}}$

Ч^Оо $3$\displaystyle{= \[ \frac{\hspace{2}1\hspace{2}}{\hspace{2}2\hspace{2}}{ $ x- {\alpha} $ }^{2} $ x- {\beta} $ \] _{{\alpha}}^{{\beta}}\hspace{5}\hspace{10} \hspace{10} \hspace{10} \hspace{10} \hspace{10} \hspace{10} \hspace{10} \hspace{10} }$ Б@Б@Б@Б@Б@Б@Б@Б@
Б@Б@Б@Б@ $3$\displaystyle{- \int _{{\alpha}}^{{\beta}} \frac{\hspace{2}1\hspace{2}}{\hspace{2}2\hspace{2}}{ $ x- {\alpha} $ }^{2}dx }$ Б@Б╦
Ч^Оо $3$\displaystyle{= \[ \frac{\hspace{2}1\hspace{2}}{\hspace{2}3\hspace{2}}{x}^{3}- \frac{\hspace{2}1\hspace{2}}{\hspace{2}2\hspace{2}} $ {\alpha}+{\beta} $ {x}^{2}+{\alpha}{\beta}x \] _{{\alpha}}^{{\beta}}}$
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Ч^Оо $3$\displaystyle{=\int _{{\alpha}}^{{\beta}} $ x- {\alpha} $ \{ $ x- {\alpha} $ - $ {\beta}- {\alpha} $ \} dx }$
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