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a=1,b=1,c=0. a=1,b=1,c=-2. a=-3,b=-3,C=0. a=-3,b=1,c=1.
a=1,b=1,c=0. a=1,b=1,c=-2. a=-3,b=-3,c=0. a=-3,b=1,c=1.
a(x﹣y)=ax﹣ay x2﹣2x+3=x(x﹣2)+3 =x2+3x﹣4 x3﹣2x2+x=x(x﹣1)2
x=y ax+1=ay﹣1 ax=﹣ay 3﹣ax=3﹣ay
a=0,b=-2. a=1,b=-3. a=-3,b=1. a=-1,b=-1
(2ax-10ay)+(5by-bx) (2ax-bx)+(5by-10ay) (x2-y2)+(ax+ay) (x2+ax)-(y2-ay)
y*=x(Ax+B)e-x y*=(Ax+B)e-x y*=Axe-x y*=x2(Ax+B)e-x
(ax+b)ex. (ax+b)xex. (ax+b)+cex. (ax+b)+cxex.
|π﹣3|=3﹣π 若ax=ay,则x=y a+b>a﹣b