1 | ||
2+
|
1 | ||
2-
|
2n2 |
m2-n2 |
2n |
m-n |
m2+n2 |
(m+n)(m-n) |
m+n |
m-n |
m2+n2 |
(m+n)(m-n) |
m-n |
m+n |
m2+n2 |
(m+n)2 |
(m+n)2-2mn |
(m+n)2 |
2mn |
(m+n)2 |
1 | ||
2+
|
3 |
1 | ||
2-
|
3 |
2(2-
| ||||
(2-
|
2×1 |
16 |
1 |
8 |
7 |
8 |
x2 |
x2-y2 |
y2 |
y-x |
1 | ||
|
1 |
m-1 |
m |
m2-1 |
(x2-4)2 |
x3+8 |
x2-4x+4 |
x2-2x+4 |
2x-1 |
2x2+x-1 |
2 |
A.20% | B.28% | C.32% | D.36% |
1 |
x-2 |
1 |
x+2 |
x-4 |
x2-4 |
3 |
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