What must be subtracted from (-4m +5m-3]
to obtain (m2-3m)
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( -4m + 5m - 3 ) - (m²- 3m)
5m + 3m - 4m - m²+ 3m
( 5 + 3 - 4 )m - m²- 3
8m - m²-3
therefore, ( 8m - m²-3 ) must be subtracted from ( -4m + 5m - 3 ) to obtain ( m²- 3m )
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