2x |
x+5 |
1 |
x-3 |
1 |
x+3 |
4 |
x2-9 |
25 |
3 |
25 |
3 |
25 |
3 |
25 |
3 |
2 |
x-3 |
3 |
2x-1 |
1 |
x+1 |
2 |
x-1 |
4 |
x2-1 |
1 |
x+3 |
2 |
3-x |
12 |
x2-9 |
x2-1 |
x-1 |
A.1 | B.-1 | C.±1 | D.0 |
x2-4 |
x+1 |
3 |
x+1 |
A.x2-2x-3=0 | B.x2-2x-5=0 | C.x2-3=0 | D.x2-5=0 |
2 |
x-3 |
3 |
x |
A.9 | B.3 | C.0 | D.-
|
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