m-1-(m-1)square +am-a
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Step-by-step explanation:
(m - 1 ) - (m - 1)2 + am - a
= (m - 1 ) - ( m - 1 )2 + a( m - 1 )
= (m - 1 ) { 1 - (m - 1 ) + a }
= (m - 1 ) ( 1 - m + 1 + a )
= (m - 1 ) (2 + a - m )
= (m - 1 ) (a - m + 2 )
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