Tap the blue circles to see an explanation.
| $$ \begin{aligned}(5x^5-3x^2+8)\cdot6x^4& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}(30x^5-18x^2+48)x^4 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}30x^9-18x^6+48x^4\end{aligned} $$ | |
| ① | $$ \left( \color{blue}{5x^5-3x^2+8}\right) \cdot 6 = 30x^5-18x^2+48 $$ |
| ② | $$ \left( \color{blue}{30x^5-18x^2+48}\right) \cdot x^4 = 30x^9-18x^6+48x^4 $$ |