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a(x-y)=ax-ay x2+2x+1=x(x+2)+1 (x+1)(x+3)=x2+4x+3 x3-x=x(x+1)(x-1)
a(x-y)=ax-ay +2x+1=x(x+2)+1 (x+1)(x+3)=+4x+3 -x=x(x+1)(x-1)
a(x-y)=ax-ay x2+2x+1=x(x+2)+1 (x+1)(x+3)=x2+4x+3 x3-x=x(x+1)(x-1)
a(x-y)=ax-ay x2+2x+1=x(x+2)+1 (x+1)(x+3)=x2+4x+3 x3-x=x(x+1)(x-1)
a(x﹣y)=ax﹣ay x2﹣2x+3=x(x﹣2)+3 =x2+3x﹣4 x3﹣2x2+x=x(x﹣1)2
a(x﹣y)=ax﹣ay x2+2x+1=x(x+2)+1 x3﹣x=x(x+1)(x﹣1) (x+1)(x+3)=x2+4x+3
a(x﹣y)=ax﹣ay x2+2x+1=x(x+2)+1 (x+1)(x+3)=x2+4x+3 x3﹣x=x(x+1)(x﹣1)