x-3 |
x2 |
x-1 |
x |
6±
| ||
2×1 |
6±2
| ||
2 |
15 |
15 |
15 |
6 |
x2-1 |
3 |
x-1 |
2x |
x-2 |
16 |
x2-4 |
x |
x-1 |
x |
x-1 |
1-x |
x2+2 |
2(x2+2) |
1-x |
1-x |
x2+2 |
A.y2+3y+2=0 | B.y2+2y+3=0 | C.y2+2y-3=0 | D.y2-3y+2=0 |
1 |
x |
2x |
x+1 |
x-1 |
x-3 |
m |
x-3 |
A.y=-x2-2x-3 | B.y=x2-2x-3 | C.y=-x2-4x-3 | D.y=x2-4x-3 |
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