3 |
x+1 |
2x |
x-1 |
1 |
5 |
1 |
5 |
1 |
5 |
1 |
5 |
24 |
25 |
1 |
5 |
1 |
5 |
x+2 |
x-2 |
3x+10 |
x2-4 |
A.x=3 | B.x=-3 | C.x1=-3,x2=2 | D.x1=3,x2=2 |
1 |
x-2 |
2x |
2-x |
2 |
x2+x |
A.y2+y-2=0 | B.y2-y+2=0 | C.y2+y+2=0 | D.y2-y-2=0 |
x |
x+2 |
x+2 |
x |
5 |
2 |
2x |
x2-1 |
x2-1 |
x |
7 |
2 |
x |
x2-1 |
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