Question
Answer
$$5x^4-25+5(6x^4+5)=35x^4$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}5x^4-25+5(6x^4+5)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}5x^4-25+30x^4+25 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}35x^4\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{5} $ by $ \left( 6x^4+5\right) $ $$ \color{blue}{5} \cdot \left( 6x^4+5\right) = 30x^4+25 $$ |
| ② | Combine like terms: $$ \color{blue}{5x^4} \, \color{red}{ -\cancel{25}} \,+ \color{blue}{30x^4} + \, \color{red}{ \cancel{25}} \, = \color{blue}{35x^4} $$ |
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