Question
Answer
$$(ma+z)^3+ma+z=a^3m^3+3a^2m^2z+3amz^2+z^3+ma+z$$
Explanation
| $$ \begin{aligned}(ma+z)^3+ma+z& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}a^3m^3+3a^2m^2z+3amz^2+z^3+ma+z\end{aligned} $$ | |
| ① | Find $ \left(am+z\right)^3 $ using formula $$ (A + B) = A^3 + 3A^2B + 3AB^2 + B^3 $$where $ A = am $ and $ B = z $. $$ \left(am+z\right)^3 = \left( am \right)^3+3 \cdot \left( am \right)^2 \cdot z + 3 \cdot am \cdot z^2+z^3 = a^3m^3+3a^2m^2z+3amz^2+z^3 $$ |
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