A.a3-b4 | B.a2+ab+b2 | C.-x2-y2 | D.-
|
1 |
4 |
A.x3-x2+1-x | B.x+y-xy-x2 | C.x2-2x-y2+x | D.(x2+3x)-(2x+2) |
A.x2+4 | B.x2-2 | C.x2-x+1 | D.x2+x+1 |
A.4(x+
| B.4(x-
| ||||||||||||||||
C.(x-3y-
| D.(2x-
|
A.
| B.4-0.25m2 | C.1+a2 | D.-a4+1 |
A.x2-y2=(x-y)(x+y) | B.x2-2xy+y2=(x-y)2 |
C.x2y-xy2=xy(x-y) | D.x3-x=x(x2-1) |
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