A.-3(x-y)3(2+y) | B.(x-y)3(6+3y) | C.3(x-y)3(y+2) | D.3(x-y)3(2-y) |
A.(2x+3)(2x-3)=4x2-9 | B.4x2+18x-1=4x(x+2)-1 |
C.(a-b)2-9=(a-b+3)(a-b-3) | D.(x-2y)2=x2-4xy+4y2 |
A.(x-4)(x+4)=x2-16 | B.x2-y2+2=(x+y)(x-y)+2 |
C.2ab+2ac=2a(b+c) | D.(x-1)(x-2)=(x-2)(x-1) |
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