A.(x2)3=x5 | B.3x2+4x2=7x4 |
C.(-x)9÷(-x)3=x6 | D.-x(x2-x+1)=-x3-x2-x |
A.9a4 | B.-9a4 | C.6a4 | D.9a3 |
A.x2+x4=x6 | B.(-x3)2=x6 | C.2a+3b=5ab | D.x6÷x3=x2 |
A.(ab4)4=a4b8 | B.(a2)3÷(a3)2=0 |
C.(-x)6÷(-x3)=-x3 | D.-x2y3×100=0 |
A.0个 | B.1个 | C.2个 | D.3个 |
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