Bonsoir;
A= 5/7 -3/14* 5/6
= 57 - 15/84
= 5/7 - 5/28
= 5/7*4/4 -5/28
= 20/28 -5/28
= 15/28
B= 15x²-35x +12x -28 -2x² +5x
= 13x² -18x -28
C)
avec (6x+1)
(6x+1) ( 5x+3 -x+6)
= (6x+1) ( 4x +9)
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Bonsoir;
A= 5/7 -3/14* 5/6
= 57 - 15/84
= 5/7 - 5/28
= 5/7*4/4 -5/28
= 20/28 -5/28
= 15/28
B= 15x²-35x +12x -28 -2x² +5x
= 13x² -18x -28
C)
avec (6x+1)
(6x+1) ( 5x+3 -x+6)
= (6x+1) ( 4x +9)