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(﹣2a2b3)÷(﹣2ab)=a2b2 (3x2y﹣6xy)÷6xy=0.5x (21x5y2﹣9x4y3)÷3x3y2=7x2﹣3xy (3x2y+xy)÷xy=3x
a2+2a3=3a5 (2b2)3=6b5 (3xy)2÷(xy)=3xy 2x·3x5=6x6
)x3+3xy2 ( )x3-3xy2 ( )x3-6x2y+3xy2 ( )x3-6x2y-3x2y
3x+y=4xy 2x2+3x2=5x4 6x2﹣3x2=3 5xy﹣3xy=2xy
2a2+a3=3a5 (3xy)2(xy)=3xy (2b2)3=8b5 2x·3x5=6x6
9xy2-6x2y 9x2y3-6x3y2 9x2y3-6x2y 9x2y3-6xy
﹣2x+3x=x 6xy2÷2xy=3y (﹣2x2y)3=﹣6x6y3 2xy2•(﹣x)=﹣2x2y2
x3-6x2y-3x2y x3-3xy2 x3-6x2y+3xy2 x3+3xy2
(a2b)2=a2b2 a6÷a2=a3 (3xy2)2=6x2y4 (﹣m)7÷(﹣m)2=﹣m5