Question
Answer
$$(v-25)^3=v^3-75v^2+1875v-15625$$
Explanation
| $$ \begin{aligned}(v-25)^3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}v^3-75v^2+1875v-15625\end{aligned} $$ | |
| ① | Find $ \left(v-25\right)^3 $ using formula $$ (A - B) = A^3 - 3A^2B + 3AB^2 - B^3 $$where $ A = v $ and $ B = 25 $. $$ \left(v-25\right)^3 = v^3-3 \cdot v^2 \cdot 25 + 3 \cdot v \cdot 25^2-25^3 = v^3-75v^2+1875v-15625 $$ |
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