$$ \begin{aligned}14y+22-15y^2+23y& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-15y^2+37y+22\end{aligned} $$ | |
① | Combine like terms: $$ \color{blue}{14y} +22-15y^2+ \color{blue}{23y} = -15y^2+ \color{blue}{37y} +22 $$ |