bonsoir
a = 2x²-8x+8
a = 2(x²-4x+4)
a =2(x-2)²
b =(1-3x)(3x+7) -2(1-3x)(x-1)
b = (1-3x)(3x+7-2+6x)
b = (1-3x)(9x+5)
c = 2x²-8x+8 +(x-2)(3x+7)
c = 2(x²-4x+4) +(x-2)(3x+7)
c =2(x-2)² +(x-2)(3x+7)
c =(x-2)(2x-4+3x+7)
c =(x-2)(5x+3)
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bonsoir
a = 2x²-8x+8
a = 2(x²-4x+4)
a =2(x-2)²
b =(1-3x)(3x+7) -2(1-3x)(x-1)
b = (1-3x)(3x+7-2+6x)
b = (1-3x)(9x+5)
c = 2x²-8x+8 +(x-2)(3x+7)
c = 2(x²-4x+4) +(x-2)(3x+7)
c =2(x-2)² +(x-2)(3x+7)
c =(x-2)(2x-4+3x+7)
c =(x-2)(5x+3)