a2-b2 |
2a-2b |
a2-b2 |
2a-2b |
(a+b)(a-b) |
2(a-b) |
a+b |
2 |
a2-b2 |
2a-2b |
x2 |
x-3 |
9 |
x-3 |
1 |
x2+3x |
1 |
3 |
1 |
b |
1 |
c |
1 |
c |
1 |
a |
1 |
a |
1 |
b |
A.0 | B.-1 | C.3 | D.-3 |
1 |
22 |
1 |
32 |
1 |
22 |
1 |
32 |
1 |
42 |
1 |
22 |
1 |
32 |
1 |
92 |
1 |
102 |
1 |
22 |
1 |
32 |
1 |
(n-1)2 |
1 |
n2 |
3 |
3 |
a |
b |
b |
a |
x2-1 |
x |
x2+x |
x2 |
3 |
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