Question

factorise 16m - 4m^2

Answer 1

:${⇒}$The greatest common factor of the terms 16m and 4m² of the expression 16m - 4m² is 4m.

Also we can write 16m = 4m × 4 and 4m² = 4m × m.

$\tt{.°. 16m - 4m² = 4m × 4 - 4m × m}$

⠀⠀⠀⠀⠀⠀⠀⠀⠀$\tt{= 4m ( 4 - m)}$