1 |
a |
1 |
b |
a-b |
ab |
x-2 |
x+2 |
4x |
x2-4 |
1 |
x2-4 |
b-a |
ab |
ab |
a-b |
(x-2)2 |
(x+2)(x-2) |
4x |
(x+2)(x-2) |
(x+2)(x-2) |
1 |
A.3a3•2a2=6a6 | B.3x2•4x2=12x2 |
C.2x2•3x2=6x4 | D.5y3•3y5=15y15 |
A.x2+x3=2x5 | B.(-2x)2•x3=4x5 |
C.(x-y)2=x2-y2 | D.x3y2÷x2y3=xy |
2ab |
x |
x+1 |
2 |
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