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A.(-x+y)(-x-y)=-x2-y2 |
B.(x2-1)(x-2y2)=x3-2x2y2-x+2y2 |
C.(x+3)(x-7)=x2-4x-4 |
D.(x-3y)(x+3y)=x2-6xy-9y2 |
A.(x-3)(x-8) | B.(x-8)(x+3) | C.(x-4)(x+6) | D.(x-3)(x+8) |
A.2a2-2b2 | B.a2-b2 | C.2a2-b2 | D.
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