你可能感兴趣的试题
(﹣2a2b3)÷(﹣2ab)=a2b2 (3x2y﹣6xy)÷6xy=0.5x (21x5y2﹣9x4y3)÷3x3y2=7x2﹣3xy (3x2y+xy)÷xy=3x
x3﹣4x2+4x=x(x2+4x+4) x2y﹣xy2=xy(x﹣y) x2﹣y2=(x﹣y)(x+y) x2﹣2xy+y2=(x﹣y)2
2x2﹣xy= 2x(x﹣y) ﹣xy2+2xy﹣y=﹣y(xy﹣2x) 2x2﹣8x+8=2(x﹣2)2 x2﹣x﹣3= x(x﹣1)﹣3 第1题
)x3-x=x(x2-1); ( )x2-2xy+y2=(x-y)2 ( )x2y-xy2=xy(x-y) ( )x2-y2=(x-y)(x+y)
x3-x=x(x2-1) x2+2xy+y2=(x+y)2 x2y-xy2=xy(x-y) ab2-6ab+9a=a(b-3)2
X2+2Y2 2XY2 2X2+Y2 2X2Y 3X2+Y2 2X3Y X2+3Y2 2XY3
3a2+a2=3a4 8xy﹣7xy=xy 3x2y﹣xy2=2x2y 3a+b=3ab
﹣2x+3x=x 6xy2÷2xy=3y (﹣2x2y)3=﹣6x6y3 2xy2•(﹣x)=﹣2x2y2
X2+2Y2==2XY2 2X2+Y2==2X2Y 3X2+Y2==2X3Y X2+3Y2==2XY3