Question
Answer
$$-y^3x-y^2x+y^2+y^3x+y^2=-xy^2+2y^2$$
Explanation
| $$ \begin{aligned}-y^3x-y^2x+y^2+y^3x+y^2& \xlongequal{ } -\cancel{xy^3}-xy^2+y^2+ \cancel{xy^3}+y^2 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-xy^2+2y^2\end{aligned} $$ | |
| ① | Combine like terms: $$ \, \color{blue}{ -\cancel{xy^3}} \,-xy^2+ \color{green}{y^2} + \, \color{blue}{ \cancel{xy^3}} \,+ \color{green}{y^2} = -xy^2+ \color{green}{2y^2} $$ |
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