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﹣ab﹣ab=0 5m﹣m=4 3p+2q=5pq x2y﹣2yx2=﹣x2y
X2+2Y22XY2 2X2+Y22X2Y 3X2+Y22X3Y X2+3Y22XY3
y=2x3 y=|x|+1 y=﹣x2+4 y=()|x|
y=x与y= y=lgx与y=lg y=x2与y=lgx2 y=ax(a>0,a≠1)与y=logax(a>0,a≠1)
x﹣y﹣3=0 2x+y﹣3=0 x+y﹣1=0 2x﹣y﹣5=0
12abc-9a2b2c=3abc(4-3ab) 3x2y-3xy+6y=3y(x2-x+2y) -a2+ab-ac=-a(a-b+c) x2y+5xy+y=y(x2+5x+1)
a6÷a2=a3 a-6÷a-2=a-4 6a2b÷2ab=3ab (2xy+y)÷y=2x+y
x(x﹣2)+1=(x﹣1)2 a2b+ab3=ab(a+b2) x2+2xy+1=x(x+2y)+1 a2b2﹣1=(ab+1)(ab﹣1)
ab≠1 a≠-2 ab≠1且a≠-2 ab≠1或a≠-2
3x+2y=5xy 4x﹣3x=1 2ab﹣ab=ab 2a+a=2a2
19a2b﹣9ab2=10ab 3x+3y=6xy 16y2﹣9y2=7 3x﹣4x+5x=4x
X2+2Y2 2XY2 2X2+Y2 2X2Y 3X2+Y2 2X3Y X2+3Y2 2XY3
x2﹣2(2x﹣y+2)=x2﹣4x﹣2y+4 ﹣3(m+n)﹣mn=﹣3m+3n﹣mn ﹣(5x﹣3y)+4(2xy﹣y2)=﹣5x+3y+8xy﹣4y2 ab﹣5(﹣a+3)=ab+5a﹣3
3a+2b=5ab 5y2-3y2=2 2ab-ab=ab 3x2y-5x2y=2x2y
x-2y+1=0 x+2y-3=0 2x+y-3=0 2x-y-1=0
3x+2x2=5x3 2a2b﹣a2b=1 ﹣ab﹣ab=0 ﹣x2y+yx2=0
x2y﹣2x2y=﹣x2y 2a+3b=5ab 7ab﹣3ab=4 a3+a2=a5
x2y﹣2x2y=﹣x2y 2a+3b=5ab 7ab﹣3ab=4 a3+a2=a5