A.(-1)3+(-3.14)0+2-1=
| B.sin30°=
| ||||
C.
| D.a2•a3=a5 |
1 |
2 |
1 |
2 |
(-4)2 |
A.x2•x3=x6 | B.(x-1)2=x2-1 | ||
C.
| D.3x2y-x2y=2x2y |
A.a3•a2=a6 | B.(-3a)2=6a2 | ||||||
C.
| D.(a-3b)(a+3b)=a2-9b2 |
A.(a-b)2=a2-b2 | B.a2•a3=a5 | C.2a+3b=5ab | D.3
|
A.(
| B.a2•a3=a5 | C.(-3a2)3=-9a6 | D.
|
A.
| B.2x2+3x3=5x3 | ||
C.3x•5x=15x | D.(x2y)2=x4y2 |
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