List all the factors of \(10m\). (2 marks)
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\( 1\ ,\ 2\ ,\ 5\ ,\ 10\ ,\ m\ ,\ 2m \ ,\ 5m\ ,\ 10m\)
\(-1 , -2 , -5 , -10 , -m , -2m , -5m , -10m\)
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\(\text{Listing factors in pairs}\)
\((1\ ,\ 10m) (2\ ,\ 5m) (5\ ,\ 2m) (10\ ,\ m) (-1 ,-10m) (-2 , -5m) (-5 , -2m) (-10,-m)\)
\(\therefore\ \text{Factors are:}\)
\( 1\ ,\ 2\ ,\ 5\ ,\ 10\ ,\ m\ ,\ 2m \ ,\ 5m\ ,\ 10m\)
\(-1 , -2 , -5 , -10 , -m , -2m , -5m , -10m\)