Sagot :
Bonsoir
M = ( 15 x +7 ) ( 3 - x + 12 x + 5 )
M = ( 15 x + 7 ) ( 11 x + 8 )
S = (13 x + 5 ) ( - 5 x + 2 - 8 x + 15 )
= ( 13 x + 5 ) ( - 13 x + 17 )
Bonsoir,
Factoriser :
M = (15x+7)(3-x)+(15x+7)(12x+5)
M = (15x+7)(3-x+12x+5)
M = (15x+7)(8-x+12x)
M = (15x+7)(8+11x)
S = (13x+5)(-5x+2)-(13x+5)(8x-15)
S = (13x+5)(-5x+2-(8x-15))
S = (13x+5)(-5x+2-8x+15)
S = (13x+5)(-13x+2+15)
S = (13x+5)(-13x+17)
Bonne soirée.