A.17 | B.36 | C.54 | D.72 |
A.(a+b)2009=0 | B.(a-b)2009=0 | C.(a¡¤b)2009=0 | D.(|a|+|b|)2009=0 |
A.x5+x5=x10 | B.a3•a2=a6 |
C.(-2x3)2=-4x6 | D.3a2•4ab=12a3b |
A.2a+a=2a2 | B.(3a)2=6a2 | C.(a-1)2=a2-1 | D.a•a=a2 |
A.x3+x3=x3+3=x6 | B.x3•x3=2x3=x6 |
C.x•x3•x5=x0+3+5=x8 | D.x2•(-x)3=-x5 |
A.3x-2x=1 | B.(x2)3=x5 |
C.x3•x=x4 | D.(a+b)(b-a)=a2-b2 |
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