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