2a•3a•5a |
(-30)a |
2a•3a•5a |
(-30)a |
(2×3×5)a |
(-30)a |
30a |
-30a |
A.4x2y•(-
| ||||
B.(-24a2b3)÷(-3a2b)•2a=16ab2 | ||||
C.(a10÷a4)2÷(a8÷a5)÷
| ||||
D.4a5b3c2÷(-2a2bc)2=abc |
A.3y+4x-1 | B.3y-4x-1 | C.3y-4x+1 | D.3y-4x |
4 |
9 |
A.m=4,n=3 | B.m=4,n=1 | C.m=1,n=3 | D.m=2,n=3 |
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