MAT - Paper 2018 - Q1B
Flashcards
Dividing through by a variable
\[k(k+1)(k-1) = k\]
Why can’t you divide through by $k$ here?
$k$ might be zero.
\[k(k+1)(k-1) = k\]
How can you divide through by $k$ here?
Note down that $k = 0$ is a solution.