A.(-2a)•(3ab-2a2b)=-6a2b-4a3b |
B.(2ab2)•(-a2+2b2-1)=-4a3b4 |
C.(abc)•(3a2b-2ab2)=3a3b2-2a2b3 |
D.(ab)2•(3ab2-c)=3a3b4-a2b2c |
A.2x2+3x2=5x2 | B.2x3-3x3=-1 | ||
C.2x2•3x2=6x4 | D.2x3÷3x3=
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A.(x3y4)÷(xy) | B.(x2y3)•(xy) | C.(x3y2)•(xy2) | D.(-x3y3)÷(x3y2) |
A.(2xy2-3xy)•2xy=4x2y2-6x3y | ||||||||
B.-x(2x+3x2-2)=-3x3-2x2-2x | ||||||||
C.-2ab(ab-3ab2-1)=-2a2b2+6a2b3-2ab | ||||||||
D.(
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