A.a+2a2=3a3 | B.a4÷a3=a(a≠0) | C.(a3)2=a9 | D.a3•a2=a6 |
A.m6÷m3 | B.m4•m-2 | C.(m-1)2 | D.m4-m2 |
A.x | B.2x | C.2x5 | D.2x6 |
A.22•20=23=8 | B.(23)2=25=32 |
C.(-2)(-2)2=-23=-8 | D.23÷23=2 |
A.2a-a=2 | B.a(3b+1)=3ab+a | ||
C.(-a)6÷(-a2)=a3 | D.2-2=-
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