A.(4x+1+4x2)÷(4x2-1)=2x-1 | ||||
B.(4x2-9)÷(3+2x)=2x-3 | ||||
C.-
| ||||
D.
|
(2x+1)2 |
(2x+1)(2x-1) |
2x+1 |
2x-1 |
x+1 |
x-y |
x+1 |
y-x |
0.2a+b |
a+0.2b |
a+5b |
5a+b |
A.x2(m+1)÷xm+1=x2 | B.(xy)8÷(xy)4=(xy)2 |
C.x10÷(x7÷x2)=x5 | D.x4n÷x2n•x2n=1 |
A.4xn+2(-
| ||
B.(-2an)2•(3a2)3=108a2n+6 | ||
C.(x4y+6x3y2-x2y2)÷(3x2y)=3x2+2xy-3x | ||
D.(3xn+1-2xn)•5x=15xn+2-10xn+1 |
3 |
4 |
1 |
2 |
1 |
4 |
1 |
2 |
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