分式的加减
y2 |
y-x |
x2 |
y-x |
2m |
3n |
3n |
p |
m2n |
p2 |
x+1 |
x-1 |
1 |
x2-2x+1 |
x |
x-1 |
A.(![]() ![]() |
B.![]() |
C.a3÷a=a2 |
D.![]() |
2 |
3 |
a2-2a-3 |
a2-7a+12 |
x+3 |
x-3 |
6x |
x2-9 |
1 |
x2-9 |
a-1 |
a |
a2-1 |
a2+2a |
1 |
x2-2x |
1 |
x2-4x+4 |
2 |
x2-2x |
2x+6 |
x2-4x+4 |
x-2 |
x2+3x |
1 |
x-2 |
3x |
x+2 |
x |
x-2 |
2x |
x2-4 |
5 |
a+b |
a-b |
a |
b-a |
2y |
y-3 |
y |
y+3 |
y2-9 |
y |
3x |
x-1 |
x |
x+1 |
x2-1 |
x |
1 |
a |
1 |
b |
x-1 |
x |
x2+1 |
x |
x+3 |
x2-3x |
x-1 |
x2-6x+9 |
x-9 |
x |
A.(![]() ![]() |
B.![]() ![]() |
C.![]() ![]() ![]() |
D.![]() |
1 |
a |
1 |
b |
2a+3ab-2b |
a-2ab-b |
x2-1 |
x-1 |
1 |
x+1 |
a+b |
5ab |
15a2b |
a2-b2 |
5x+3y |
x2-y2 |
2x |
x2-y2 |
2 |
a2-4 |
a2+4 |
4a |
1 |
2 |
1 |
a |
1 |
2 |
x2-2x+1 |
x2-1 |
x-1 |
x2+x |
3 |
x-4 |
24 |
x2-16 |