Question
Answer
$$4x\cdot5y\cdot64.6x\cdot5y=6400x^2y^2$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}4x\cdot5y\cdot64.6x\cdot5y& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}20xy\cdot64.6x\cdot5y \xlongequal{ } \\[1 em] & \xlongequal{ }1280xyx\cdot5y \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}6400x^2y^2\end{aligned} $$ | |
| ① | $$ 4 x \cdot 5 y = 20 x y $$ |
| ② | $$ 1280 x y x \cdot 5 y = 6400 x^{1 + 1} y^{1 + 1} = 6400 x^2 y^2 $$ |
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