Answer
$$25\cdot\frac{x^5}{5}x^2=\frac{25x^7}{5}$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}25 \cdot \frac{x^5}{5}x^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{25x^5}{5}x^2 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}\frac{25x^7}{5}\end{aligned} $$ | |
| ① | Multiply $25$ by $ \dfrac{x^5}{5} $ to get $ \dfrac{ 25x^5 }{ 5 } $. Step 1: Write $ 25 $ as a fraction by putting $ \color{red}{1} $ in the denominator. Step 2: Multiply numerators and denominators. Step 3: Simplify numerator and denominator. $$ \begin{aligned} 25 \cdot \frac{x^5}{5} & \xlongequal{\text{Step 1}} \frac{25}{\color{red}{1}} \cdot \frac{x^5}{5} \xlongequal{\text{Step 2}} \frac{ 25 \cdot x^5 }{ 1 \cdot 5 } = \\[1ex] & \xlongequal{\text{Step 3}} \frac{ 25x^5 }{ 5 } \end{aligned} $$ |
| ② | Multiply $ \dfrac{25x^5}{5} $ by $ x^2 $ to get $ \dfrac{ 25x^7 }{ 5 } $. Step 1: Write $ x^2 $ as a fraction by putting $ \color{red}{ 1 } $ in the denominator. Step 2: Multiply numerators and denominators. Step 3: Simplify numerator and denominator. $$ \begin{aligned} \frac{25x^5}{5} \cdot x^2 & \xlongequal{\text{Step 1}} \frac{25x^5}{5} \cdot \frac{x^2}{\color{red}{1}} \xlongequal{\text{Step 2}} \frac{ 25x^5 \cdot x^2 }{ 5 \cdot 1 } = \\[1ex] & \xlongequal{\text{Step 3}} \frac{ 25x^7 }{ 5 } \end{aligned} $$ |
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