bonsoir;
( 5x +4 ) (-2x + 1 ) + ( 2x - 3 ) (-x - 6 )
= -10x² +5x -8x +4 -2x² -12x +3x +18
= -12x² -12x +22
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bonsoir;
( 5x +4 ) (-2x + 1 ) + ( 2x - 3 ) (-x - 6 )
= -10x² +5x -8x +4 -2x² -12x +3x +18
= -12x² -12x +22