A.65 | B.64 | C.54 | D.27 |
k(k+1) |
2 |
3t+1 |
2 |
3t+1 |
2 |
A.a+a=a2 | B.(2a)3=6a3 | C.(a-1)2=a2-1 | D.a3÷a=a2 |
A.-a+2a=a | B.(2a)2÷a=4a | C.(ab)2=a2b2 | D.(a2)3=a5 |
A.a3+a2=2a5 | B.(-2a3)2=4a6 | C.(a+b)2=a2+b2 | D.a6÷a2=a3 |
A.a2+a3=a5 | B.(3a)2=6a2 | C.(a+1)2=a2+1 | D.a6÷a2=a4 |
A.(
| B.(tan45°-1)0=1 | ||
C.(a3)2=a5 | D.a6÷a3=a3 |
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