1 |
5 |
1 |
5 |
1 |
5 |
A.c-b+5ac | B.c+b-5ac | C.c-b+
| D.c+b-
|
1 |
5 |
1 |
5 |
1 |
5 |
A.5ab(9b-4) | B.5ab(9b2-4) | C.5a(3b-2)2 | D.5a(3b+2)(3b-2) |
A.m+1+
| B.-x2+2xy-y2 | ||||
C.-a2+14ab+49b2 | D.
|
A.x2-x-2=x(x-1)-2 | B.x2-4=(x+2)(x-2) |
C.(x-1)2=x2-2x+1 | D.(a+b)(a-b)=a2-b2 |
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