1±
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4 |
1+
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4 |
1-
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4 |
1+
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4 |
1-
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4 |
A.x2+y2 | B.x2-xy+y2 | C.p2-p+
| D.-m2-n2 |
A.(a+3)(a-3)=a2-9 | B.x2-2x+3=(x-1)2+2 |
C.x2-6x+9=(x-3)2 | D.a2-5a-6=(a-2)(a-3) |
A.6 | B.-6 | C.4 | D.-4 |
A.a(x2+y2)+2axy | B.(2m-n)[m-(2m-n)] | ||
C.(x2+y2+xy)(x2+y2-xy) | D.a2(3-
|
A.m2+n2=(m+n)(m-n) | B.a2-a=a(a-1) |
C.(x+2)(x-2)=x2-4 | D.x2+2x-1=(x-1)2 |
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