Question
Factorize:
$16m - 4m^2$

Answer

The greatest common factor of the term
$16m$ and $4m^2$ of the expression
Also, we can write $16m - 14m.4$ and $4m^2= 4m.m$
Therefore, $16m - 4m^2= (4m.4) - (4m.m)$
$= 4m(4 - m)$

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