A= x³-12x²
= x(x+2√3x)(x-2√3x)
B=x(1-x)+(x-1)(x+2)
= (1-x)(x-x-2)
=-2(1-x)
C=(5x+1)(-3x+4)+x(10x+2)
=(5x+1)(-3x+4+2x)
=(5x+1)(-x+4)
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A= x³-12x²
= x(x+2√3x)(x-2√3x)
B=x(1-x)+(x-1)(x+2)
= (1-x)(x-x-2)
=-2(1-x)
C=(5x+1)(-3x+4)+x(10x+2)
=(5x+1)(-3x+4+2x)
=(5x+1)(-x+4)