Answer
$$(u+5)^3=u^3+15u^2+75u+125$$
Explanation
| $$ \begin{aligned}(u+5)^3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}u^3+15u^2+75u+125\end{aligned} $$ | |
| ① | Find $ \left(u+5\right)^3 $ using formula $$ (A + B) = A^3 + 3A^2B + 3AB^2 + B^3 $$where $ A = u $ and $ B = 5 $. $$ \left(u+5\right)^3 = u^3+3 \cdot u^2 \cdot 5 + 3 \cdot u \cdot 5^2+5^3 = u^3+15u^2+75u+125 $$ |
This page was created using
Simplify polynomials calculator