( b - a )” - 2a + 2b= ( a - b )” - 2( a - b )= ( a - b )( a - b - 2 )或者= ( b - a )” + 2b - 2a= ( b - a )" + 2( b - a )= ( -a + b )( b - a + 2 )= -( a - b )( -a + b + 2 )= ( a - b )( a - b - 2 )...
因式分解 (b－a)2－2a＋2b
( b - a )” - 2a + 2b= ( a - b )” - 2( a - b )= ( a - b )( a - b - 2 )或者= ( b - a )” + 2b - 2a= ( b - a )" + 2( b - a )= ( -a + b )( b - a + 2 )= -( a - b )( -a + b + 2 )= ( a - b )( a - b - 2 )...