Vins BonsoirA = ( x + 4 )²B = ( 7 x - 1 )²C =  ( 2 x + 3 ) ²D = ( x + 1 - 5 ) ( x + 1 + 5 ) = ( x - 4 ) ( x + 6 )

MargeSimpson1 Bonsoir,Factoriser :A = x²+8x+16A = x²+2×x×4+16A = x²+2×x×4+4²A = (x+4)²D = 49x²-14x+1D = 7²x²-14x+1D = 7²x²-2×7x×1+1D = 7²x²-2×7x×1+1²D = (7x)²-2×7x×1+1²D = (7x-1)²G = 4x²+9+12xG = 4x²+12x+9G = (2x+3)²J = (x+1)²-25J = (x+1-5)(x+1+5)J = (x-4)(x+6)Bonne soirée.